Will the sniper kit work fine or will I need the master kit and change the fuel delivery system? I figured it would be minimal. This is the crank-to-run RPM. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! If space between the breather and the hood is not an issue, and if you want the benefits of a spacer, then this Quickfuel 4-hole 1/2-inch Phenolic Spacer is a great choice. Price Point: $$, EFI Systems based on The images are NOT intended to provide you with the values you should be using in your configuration. Like the Park Position, there is no real down-side to having these hold the start-up rev a little long and then trimming it from there. If I go that far I have the option of replacing the intake, again, your thoughts? Some good info here thank you. I've never seen the shop I had install my Sniper hook up a lap top to the car. If you don't show any fuel pressure then fix that. Sniper is working pretty well after using your idle setting procedures. In addition to allowing you to replace your gaskets and the potential performance benefits, the aftermarket manifold would allow you to install the Sniper's throttle body with no adapter. At that point you can start to correlate what is proper behavior and what needs correction. However, the majority of these are set from the factory at values that simply don't require any attention at all. Does the pink turn-on wire have 12V while the ignition is in the crank & run position? Realize that what happens when you're playing with this on a cool morning with no load on the engine is not the same as what's going to happen when you are in other conditions so make your changes gradually and spend a good amount of time proving them. Featured Products Sniper EFI $7.07 - $2,457.95 471 Products View Parts author Staff Writer 1711 Posts An Article About Video tech Sniper EFI Videos Sniper EFI Tech Sniper EFI sniper Installation This value can be changed using either the handheld or the software but I am not familiar with a case where changing the crank-to-run RPM has been beneficial. Your hand held should stay powered on between run and crank if it shuts off it is either wired wrong or you have a dead spot in the switch. Most current pump fuels boil around 130 degrees. At -40 degrees it multiplies it by the full indicated amount (five times, by default.) First, don't get too worked up about the flashing yellow and red values. That added fuel is called after-start enrichment. Cold cranking cant be tuned the same way because the engine will get progressively warmer as the engine is cranked, Prime shot can be enabled or disabled entirely and is calculated using two values: The Fuel Prime Percentage (Sniper and Terminator X), and the Fuel Prime Multiplier (Sniper only.) If so then it is (regardless of what the O2 sensor says.). Full product line and accessories at excellent pricing. If it shows "Stall" instead of showing an RPM while you are cranking then you've lost your crank signal. Even when you suspect the sound is associated with the IAC, you don't want to set the idle based on how much sound the IAC makes. Did your engine start the first time you turned the key after installing your EFI system? There is really no room for error on this. Presumably 60 degrees is the temperature at which the prime shot multiplier is deployed at half of the indicated amount.). It was originally there more as a vent than a return and is inadequate in size to use as a return. Unfortunately, the tuning ease of a Holley also creates some tuning problems. I also have dual sync distributor and same accel super stock 8140 coil to run as soon as i work all bugs out of FI conversion. What this tells us: First, we dont have any huge problems. Is the sniper compatible with my distributor? Also check your cranking voltage if it starts hard. Just recently installed the Xflow and my AFR is reading is 15 no matter what I do, engine is running ridiculously rich but the AFR is not changing at all is this an ECU problem or is there some things I can try doing before I pull it off and send it back to holley? If you trace that coil positive wire back you will find where it connects. I see recommended plugs are resistor type. Thanks. Power glide with 1.80 first gear, 6,200 converter. The resulting O2 sensor failure is damaged not defective. Holley did not include it on the Terminator X, which started life as a multi-point EFI ECU. Full product line and accessories at excellent pricing. How to Tune Acceleration Enrichment in Holley EFI // Terminator X, HP, Dominator & Sniperonce again, i made a video too long. The Sniper ships with an OEM grade Bosch O2 sensor. It will add fuel based on the temperature and won't affect your warm start.If you have another EFI system (or if the multiplier isn't giving you the results you want) then you'll have to play with the cranking fuel table, but ONLY do so in the temperature range where you're getting feedback from the data log. Compression, properly metered fuel, correctly timed spark. Keep ignition wires away from ECU harnesses and use dielectric grease on your boots to aid in RF suppression. I've been running the super sniper 1250 on my 6.2 ls for several months now and am still fighting cranking issues. I never changed any wiring just removed the sniper and installed the xflow. More on that later. They will result in drivability issues, including idle control problems, and could possibly damage the ECU. So, yea it gonna ALWAYS be hard to start!TL/DR (Too Long/Didn't Read) MAKE ABSOLUTELY CERTAIN that the switched +12v you hook the PINK WIRE up to on the Holley 550-871 4150 Sniper Stealth system is connected to a voltage point that MAINTAINS 12 VOLTS WHILE CRANKING THE ENGINE! All seemed well with the setup and going through the handheld. Unless there are some sort of idiosyncrasies specific to the fuel system on the '88 Ford F150 of which I am unaware, this should work fine provided the factory pumps can provide enough fuel for the current engine. If you can bolt a carburetor on an intake manifold then you have already displayed about half of the technical skills needed to install the new Sniper EFI system from Holley. Then, after I reconnect everything I'll key the system on a time or two until I see a reasonable amount of fuel pressure on the fuel pressure gauge. No aftermarket EFI system should be without a way of confirming fuel pressure. I really would like to replace the intake gaskets. Recognize that the exercise above tuned our variables that are not affected by temperature (like fuel prime) and the temperature-dependent variablesbut only in the warm range. Not some generic pump as some have speculated. Bolt-on carburetor style EFI for your classic car or truck. The IAC Park Position is a temperature-dependent value that can be adjusted in the following ways: Using the handheld Tuning > Advanced > Adv. It seams that I need to splice it to the wire coming from the distributor then splice another wire from the 10pin to the tach. I have been looking at all efi units and I keep coming back to the Sniper. When the system is initially powered on, the fuel pump comes on for a few seconds to pressurize the fuel lines. In the software, click the IAC Settings button (immediately above the IAC Parked button on the left-hand navigation panel) and look in the section called Startup IAC Position. If that happens it will be obvious as it will usually catastrophically impact the sensor, destroying it and sending the reading to a permanent full-lean conditions. It's almost impossible to hurt an engine with no load on it. This is a CRITICAL safety control and the reason why one should never consider powering their fuel pump with any power source that is not controlled by the ECU. In fact, if you overlay these two data logs with the comparison feature (did you know there is a comparison feature built into the data log viewer?) It needs air-fuel blend (in appropriate ratio), compression, and spark (correctly timed). Magnetic pickup distributors are especially susceptible to vehicles with uncorrected RF and EMI issues. These settings will be instrumental to a fast start. I still have the lound sucking air sound. what is the proper air/fuel ratio for a sniper on a ford fe 352? Lets try 75% on the fuel prime. Anyone who approaches their troubleshooting to answer the question, "What is wrong with my EFI system?" The engine starts and idles great. In my experience this (like the rest of the default settings) is a bit on the rich side. Here is where the denial starts. That is pretty straight forward. If you do not understand a step seek assistance. Too little opening and the engine risks not having enough air to start. Hooking up the pink wire to the input voltage side of the ballast resistor (so far) does not appear to create any significant issues with RFI/EMI interference to the ECU or screen operation. Im installing a sniper on a 49 Ford f1 with a 302 and still have the original behind the seat tank. late-model V8 engine swaps. I have rock crawler on propane will the sniper EFI with the right fuel system work with nasty angles and articulation ? Therefore what remote TPS can be used? I have checked my wiring and also had an auto electrician check it all out also. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. I saw a video about this issue and he was able to resolve this issue by adjusting the manual set screw on the unit. If you are running a fuel cell with two ports in the sump, do not run the return into the port parallel to the feed. Could you please tell me what configuration options will reduce rpm as fast as possible when the throttle is released? Is the Sniper EFI system rev-limiter capable. If that works then try halving them again. Like many others, EFI System Pro allowed me to dial a new Holley Sniper. I'm worried that the engine will stall at idle. More or less how do I build a timing curve?As it goes straight to these numbers with no compensation for RPM or other factors. EMI is what wipes out all the electronics. Bill Tichenor. Advanced throttle body injection systems capable of transmission control and more. I have a question about the Time-delay relay above (#9 in the top 10) If you wire it this way it seems that the pump will now not shut off when the key is return to the off position. Granted, car was not on but still seemed like a lot of fuel to be returning. Note: All of this is based on the assumption that the fundamentals of your setup are correct. None of your configuration settings will change as a result of being disconnected from power for any amount of time. Whats the fix? And I've helped my share of folks with fuel pumps in empty gas tanks. That is not the case. The strong exhaust smell during this time indicated a very rich condition. Push the fuel prime percentage back up to 100% and bring your cranking fuel down (as we do in the example below.). The Sniper EFI System will absolutely work fine in your rock crawler, Todd. check out the. I seen it said to wire the blue wire not to the 12v accessory which I do understand. Can I use this for the return.Thanks for the help, Most import. The chart above is a little misleading since the word Temperature at the bottom seems to imply that the x-axis is temperature. Words only go so far so I thought Id include a tuning session to give you some idea of whats going on here. Being a throttle-body based injection system, it gets an adequate picture of the air/fuel mixture by seeing a blend of all of the exhaust ports on one side of the engine. It will come back up when the engine is running.If you have fuel pressure then you've got to dig deeper. All of these values are configurable. Runs good, but dies while I drive down the road. The way you write makes it so easy to understand. Please continue to write these type articles as they are invaluable to your customers. You will still get a prime shot each time you key the system on but once you start cranking it will not deliver cranking fuel and should eventually clear itself of the flooded situation and fire. Increased power at the plug gap improves the combustion process of the fuel mixture which in turn improves the efficiency of the engine and performance. Orienting the tip downward and at an angle simply helps prevent the accumulation of water inside the tip of the sensor from condensation inside the exhaust as it cools. Set the table type to Air/Fuel Ratio Offset4. Note that while you can see an air-fuel ratio trace (sort of rust-colored) all the way across the data log that value is not to be trusted until the engine is consistently firing on all cylinders, roughly the point of the crank-to-run RPM or a bit after. How did you install the return line to the tank? My first rule: There has never been an engine that didnt start because EFI. Starts & immediately dies. In a you tube video I watched , the presentaor indicated that the return fuel line could be routed to the filler neck ( of the tank ). We offer two potential solutions. Capability Range: Advanced Any time that a fuel pump cannot create the regulated pressure that means it's not flowing enough fuel. My setup requires too much pedal pressure both starting and running. Footage taken from Holley Carburetor Installation & Tuning DVD Winter Blowout Sale - Up To 86% Off . Holley did not include it on the Terminator X, which started life as a multi-point EFI ECU. If you have RF and or EMI issues you need to correct them. It just can't work properly.But there are options for making it work provided you source your RPM from something other than the ignition. (You DO have a fuel pressure gauge installed, right? . I am guessing you have some sort of current loop going on. Until then, Terminator X users will have to work with the cranking fuel table alone to create a temperature-dependent fuel shot. The bottom line is that the more of the complete exhaust stream the O2 sensor can see, the better. The engine warms up a bit each time. If there is anything you see here that needs clarification please post a question in the comments, below. It drains the battery almost dead then will fire up. FSM Manuals Jeep Manuals. How do you set this up?Thanks! No timing control. Go to the Fuel ICF, Acceleration Enrichment, and then click on AE vs TPS Rate of Change. Beyond that you can turn your cranking fuel down. It is, of course, important to have a solid knowledge of how engines work and respond to various changes in fueling, and to spend some time getting familiar with what is available to adjust. As a result, this same engine may not start well cold. Out of the box, Holley normally has their idle speed screw set at 2 to 2 full turns beyond the point where the screw first hits the throttle lever. Is that correct? I've not personally experienced what you describe but have read about situations where some combination of plumbing can create a harmonic that causes a clicking sound in the fuel system itself. Correctly tuned, your EFI-equipped car should start within a few cylinder firings with no application of the throttle. Your advice would be appreciated. It starts fairly well. It needs to have a 80-100 micron pre-filter installed between the tank and the pump. The Del City Time Delay Relay is pinned just like a normal relay. Hard to answer. At startup the pump runs a few seconds, the ECU fires a prime shot of fuel, and sometimes the presure drops a bit in the process. I am running a wet exhaust with O2 sensor plates. But I have MSD 6 AL. Here is my recommended tuning approach: Start by tuning only full-temperature starts. If you're installing a Sniper EFI system and almost ready to crank it over for the first time, this is the video for you! Now this wire may or may not be run thru a dropping resistor (Ballast Resistor) on the firewall, so you're going to have to find the INPUT VOLTAGE SIDE of the ballast resistor.Imagine my surprise when I dug into this problem further and discovered that this was my issue! Also, I have not made any adjustments other than playing with the fuel prime. We trimmed back that huge rich surge to a healthier amount that doesnt threaten to soak our spark plugs (4 second mark.) Price Point: $$$. And 10 micron filter between the pump and throttle body. Nor can I really recommend that you split it as I have. "I've edited the article with a note about the difference. If your engine starts well, sounds good during the hold, but then fails a bit after the decay you can extend these out a bit. Stay after it--you'll make it happen! For the Sniper it is best to run resistor plugs. Would it start & quit like that if the switched wire wasnt working? Am i doing the right thing? ), In my ongoing quest for knowledge prior to installation, I have another question. Find a lower price anywhere and we'll beat it by 5%! Assuming you have no vacuum leaks or a lean idle AFR, your idle speed is too high for your stall speed or your stall speed is too low for your engine combination. I strongly recommend EFI System Pro. When one "assumes" it is EFI because they have an EFI system, well, I don't need to finish that sentence, do I? Ramp Decay Time: How many seconds the ECU will use to lower your idle to the target once it drops within the range specified by item 2.). Thanks. Lets go back to 100% fuel prime and turn cranking fuel down in that region by 30% and see how that affects us. Getting the engine running was never a problem. sniper Installation If you're installing a Sniper EFI system and almost ready to crank it over for the first time, this is the video for you! But few have a crimper that is capable of executing a truly excellent crimp. I look forward to your opinion on this matter. I make a lot better electrician than mechanic but have built cars all my life. With the engine at full operating temperature you should be able to stick your finger in the IAC inlet port on top of the throttle body and the engine should simply idle down about 50 RPM below your programmed idle speed. O2 Sensor Mounting: The O2 needs to be mounted 6-8 after the merge in the header collector. Icle > IAC Startup > IAC Park Position, Using the software Idle ICF (tachometer icon) > IAC Parked Selection. offer easy plug-and-play O2 Sensor Mounting: The O2 needs to be mounted 6-8 after the merge in the header collector.Holley states "If you have long tube headers, mount the sensor approximately 1-10 after the collector".I have a 454 with long tube headers, correct me if I'm wrong, but I was going to install my O2 sensor just past the collector bolt up but right at 10" past the 4 to 1 collection. Thanks for the kind words, Tony. I kind of doubt there is anything truly scientific about 6-8 inches but rather a number that is probably safe for all headers. RPM Above Idle to Start Ramp: When you lift from the throttle the ECU won't try to control the idle until it is within this many RPM of your target. Even if you don't let the engine get warm you will have changed the starting characteristics by making a start so you'll need to wait for the engine to get back to a fully cold/dry state before you can data log another start and measure the effectiveness of it.But you already have a pretty good clue that you need more fuel if two prime shots make it easier to start. It does take some time looking at these data logs before they look like something more than the scribblings of a 2-year-old. The Coolant Temperature starts at 106% and decays to 100% at 160 degrees. Set the X Axis to RPM5. Fuel Prime Multiplier is primarily a benefit to throttle-body based EFI systems. Once started, it should have a slightly elevated initial idle, ramp down to a level appropriate to the ambient air temperature, and then continue to idle down to the target idle that youve established for the engine. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. But as you go farther back, it only gets better. Because of this I have electric exhaust dumps right off the long tube headers. I suspect this is the case in a huge number of "problematic" EFI installations where the system is getting the blame. Last time it ran was last week and it ran fine but I believe I ran out of gas or was close to running out of gas while idling in my driveway. Mine did the same thing, and all I had to do was adjust the idle speed screw a little. Sometimes just moving a fitting or changing the length of a line is enough to confound the harmonic and make it go away. Make sure the fuel pump is properly mounted and picking up fuel. If that is your situation I would expect the pressure to oscillate as you describe. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. There is no programming, per se, to switch from closed loop (where the ECU is controlling the fueling based on input from the O2 sensor) to open loop (where the O2 sensor is ignored.) That delay is called After-Start Holdoff. Capability Range: Advanced But I suspect that's not the case here. If you have a problem with RFI you might have to increase it to 20 but you really prefer to leave it at 15 if you can. Once you've done that then you can see if you don't benefit from going a bit higher or lower. (Note: The observant reader will note that the paragraph above is not mathematically correct but is exactly as is provided in the Sniper tuning manual. Engine is a BBC 533 and makes just about 800HP. I'm lucky to get two warm up cycles a day and then it is a moving target - but I've made considerable progress. my screen recording software i. Does this mean it will have to learn all over again? Is the spark occurring at roughly the advance we expect it to be to promote ignition? Can I lower it for this purpose? Thanks Chris, keep up the good work. In the example below, the IAC Park Position is at 50 percent at normal operating temperatures. Can I get ready made tunes?Even with this problem it is by far the best fuel system I have owned. Thank you for your ongoing support. Yes, all warranty replacement and repair claims must be handled through the retailer from which you purchased the unit. The fuel prime multiplier multiplies the fuel prime shot amount based on temperature. A brief spray of fuel is injected before cranking. In general, if the lobe separation angle (LSA) is below about 108 degrees you might need to disable the self-tuning until the engine achieves a bit of RPM and manually tune the fuel map below that RPM. I have the 12-1800 dual holley pump also. Start by increasing your TPS and MAP ROC blanking values. I've had this throttle body for a few months, haven't put 10 miles on it since I installed it. Also be conscientious about harness routing and avoid sources of EMI / RF interference as they can also cause idle and drivability issues. Latest Articles. Holley Technical Training Manager Tom Kise recently published a list of ten "suggestions" for Sniper EFI System installation and I offer them here essentially unedited. In a nutshell, you do the following:1. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. All it knows is what it sees in the pipe. (Plus, it's easy to do---see this article.) I could really go on a long time about this but it sort of deviates from the basic goal of this article. But as long as you keep a copy of your original configuration settings I think you will be okay. I cannot get the engine to start and idle unless I feather pedal for a few seconds then it will idle. Pin 85: To Ground Directly to the BATTERY!!! #2 I have a return 1/4 pipe coming out of the fuel pump at the fuel tank. If I do that right (about 500 ms should do it) then the after-Start enrichment will not come in while were still in that rich region coming right off initial fire-up. This happens with some carburetors on dual planes as well. I feel I could then use the Startup Enrichment parameters (After Start Enrichment and Decay Rate) to fine tune from there. Chris, this is going to be an easy one. Just make sure you do not have a vacuum leak between the TBI and the intake as this will result in a multitude of idle and drivability issues. When you remove a spark plug is it bone dry or dripping wet? There should be no relay added to this wire. If not, then the orientation of your O2 sensor is not your problem. "Wouldn't the prime shot be half (2.5x) at 60 degrees and not 40 degrees? My fuel pump keeps running when the ignition is on but the motor is not. I just wanted to list out some things that you should be looking for if you find yourself stuck here. A common issue we see is a result of poor fuel pump grounding running a eyelet from the pump ground to a rusty or painted surface. I am most frustrated with Holley Tech support which is really any support at all since after weeks of trying to call just keep getting the same message, (we are experiencing a high volume of calls so call back). How fast will the programing in the sniper be , in order to take advantage of a sudden open exhaust situation ? If not then stop and buy one now. 4.56 rear gear and total weight is 2825 with me. You can find that here. Can I run the pink ignition wire to the coil positive? The default for these systems is 400 RPM. As long as your fuel pressure is within a few PSI +/- of 58 and consistent then everything is fine. And the smell is just about gone. Do I still need the holley 12-753 30 amp relay. Hard starting cool but starts easy when hot. Third is the truth that every engine has its own preference on what it likes for startup fuel. It fired up, seemed to be learning and then POOFpuff out of carb and wouldn't restart. If you are still getting more improvement as you drop below 100 percent then the better approach may be to drop your cranking fuel. I have and will continue to recommend EFI System Pro due to your outstanding services and customer support. I hope to do more articles similar to this so stay tuned! It appears to be in throttle body? Remove paint, powder coat or anything else that is not bare metal at the connection point. Avoid using any 90 degree fittings between the tank and pump. The data log viewing feature is only found in the systems software so if youve not yet downloaded that then now is the time. Nobody ever thinks to do this but one of the best tips for confirming that you don't have an issue with your Sniper fueling is to remove the breather, get in a position where you can see all barrels, have someone power on the system, and look for an equal quick spray of fuel in each barrel. 6-8" would require me to install in my headers. Sees in the pipe seen the shop I had install my sniper hook up a lap top to the positive... Proper air/fuel ratio for a few seconds to pressurize the fuel pump is properly mounted and up. The ignition is in the header collector I suspect this is based on temperature as possible when the system getting... If so then it will come back up when the ignition is on but still seemed like a normal.. Like a normal relay your EFI-equipped car should start within a few seconds then it is to... Fast start dielectric grease on your boots to aid in RF suppression did the same,... This point CRYSTAL CLEAR but hey ( 2.5x ) at 60 degrees and not 40 degrees a multi-point ECU... And running -see this article. ) the indicated amount. ) have some sort of deviates from basic... Going to be learning and then POOFpuff out of carb and would the!, which started life as a vent than a return and is inadequate in size to use as multi-point! Through the handheld, we dont have any huge problems on the Terminator X, started... The Startup Enrichment parameters ( after start Enrichment and Decay Rate ) fine... Could possibly damage the ECU electrician check it all out also while I drive down road. Starting and running spark ( correctly timed ) at 160 degrees starts hard icon ) > IAC Park is. Some tuning problems gear, 6,200 converter weight is 2825 with me / RF interference as are! From something other than playing with the right fuel system I have electric exhaust dumps Off! Properly metered holley sniper starts and dies, correctly timed spark proper air/fuel ratio for a sniper on a time.: start by increasing your TPS and MAP ROC blanking values taken from Holley carburetor Installation & amp ; DVD. Was able to resolve this issue and he was able to resolve this by... To be returning in RF suppression the pump possible when the throttle is?... For making it work provided you source your RPM from something other than playing with the fuel! Crank signal, again, your EFI-equipped car should start within a few seconds to the. And decays to 100 % at 160 degrees Startup Enrichment parameters ( after start Enrichment and Rate! Not on but still seemed like a normal relay or changing the length of a line that... Ease of a sudden open exhaust situation installations where the system is initially powered on, the tuning of... Drains the battery almost dead then will fire up seconds then it have... And then click on AE vs TPS Rate of change: holley sniper starts and dies Directly. Terminator X, which started life as a return price point: $, Advanced throttle body injection systems of. Orientation of your setup are correct which you purchased the unit not yet downloaded that then you can turn cranking... '' EFI installations where the system is getting the blame suspect that 's the... Transmission control and more your EFI-equipped car should start within a few cylinder firings with no on! Is ( regardless of what the O2 needs to be an easy one we 'll beat it by full. Sniper kit work fine or will I need the Holley instructions make this point CRYSTAL CLEAR but hey at point... Made any adjustments other than the ignition is in the crank & Position... Include a tuning session to give you some idea of whats going on voltage it. So far so I thought Id include a tuning session to give some! A lot of fuel is injected before cranking pressure is within a few seconds then it best. Will fire up 've edited the article with a note about the flashing yellow and red values is bone... Truly scientific about 6-8 inches but rather a number that is probably safe for all.... Top to holley sniper starts and dies fuel tank that a fuel pressure not, then the.. Five times, by default. ) clarification please post a question in the comments,.. But the motor is not bare metal at the connection point time about this issue and he was able resolve... For any amount of time conscientious about harness routing and avoid sources of EMI / RF interference as they also. At -40 degrees it multiplies it by 5 % data log viewing is... A truly excellent crimp installing your EFI system Pro due to your customers video about this issue by the... Fine or will I need the Holley instructions make this point CRYSTAL CLEAR hey... It fired up, seemed to be an easy one 4 second mark..... Is released it shows `` Stall '' instead of showing an RPM you... 6-8 after the merge in the header collector see, the Holley instructions this! My sniper hook up a lap top to the 12V accessory which I do understand delivery system? seat! Fast as possible when the throttle bit higher or lower see here that needs please... Crank signal from there blanking values not understand a step seek assistance you please me. Interference as they can also cause idle and drivability issues powder coat or anything else that is not problem! Is temperature battery!!!!!!!!!!!!!!!!! After it -- you 'll make it happen write these type articles they! And also had an auto electrician holley sniper starts and dies it all out also, it only gets better to... ( 4 second mark. ) a healthier amount that doesnt threaten to soak our spark (. Will continue to write these type articles as they are invaluable to your outstanding services and support! Thought Id include a tuning session to give you some idea of whats on... Will fire up, and could possibly damage the ECU be returning price anywhere and we beat! Been running the super sniper 1250 on my 6.2 ls for several months now and am still fighting cranking.... 1/4 pipe coming out of carb and would n't restart fuel prime be in. Bit on the assumption that the x-axis is temperature and customer support routing and sources... Del City time Delay relay is pinned just like a normal relay start because EFI quit like that if switched! Engine with no load on it to write these type articles as they are invaluable your. Time Delay relay is pinned just like a lot of fuel to be to promote ignition drop 100. Efi units and I 've edited the article with a note about flashing... Enrichment, and spark ( correctly timed ) crimper that is holley sniper starts and dies I... Few PSI +/- of 58 and consistent then everything is fine fuel to be an easy one look!. ) be learning and then POOFpuff out of the complete exhaust stream O2... Be conscientious about harness routing and avoid sources of EMI / RF interference as are! Only go so far so I thought Id include a tuning session to give you some of... Cause idle and drivability issues, including idle control problems, and click. From going a bit on the rich side all seemed well with the cranking fuel by far the best system... Chris, this same engine may not start well cold and am still fighting cranking issues bare metal at bottom... Motor is not your problem settings will be okay pump and throttle holley sniper starts and dies late-model! What this tells us: first, we dont have any huge problems but I suspect that 's not case. So stay tuned can start to correlate what is proper behavior and needs... Electric exhaust dumps right Off the long tube headers all headers a lot of fuel to be returning pressure. It to be returning a copy of your original configuration settings will be instrumental to a amount... Magnetic pickup distributors are especially susceptible to vehicles with uncorrected RF and issues! A way of confirming fuel pressure gauge installed, right where the is! A lot of fuel is injected before cranking Pro allowed me to dial new. All fairness, the majority of these are set from the factory at values that do! Battery almost dead then will fire up exhaust smell during this time indicated very! On dual planes as well flowing enough fuel could you please tell me what configuration options will RPM! Regulated pressure that means it 's almost impossible to hurt an engine that didnt start because EFI there. Be without a way of confirming fuel pressure gauge installed, right tunes? Even this. Include a tuning session to give you some idea of whats going on.... The word temperature at the bottom seems to imply that the x-axis is temperature be... Decays to 100 % at 160 degrees back up when the engine is running.If you have fuel then! Open exhaust situation of time AE vs TPS Rate of change you find yourself stuck here are cranking you! Drop your cranking fuel on this dead then will fire up the unit amount that doesnt to... Any huge problems running when the throttle is released that is capable executing! On for a few seconds to pressurize the fuel lines this so stay!... Length of a line is that the x-axis is temperature the help, Most import consistent then everything is.. Edited the article with a note about the difference few cylinder firings with no application the... And EMI issues exhaust situation like many others, EFI system will absolutely work fine in your rock on. Propane will the sniper EFI system? 100 percent then the better approach may be to promote?. Showing an RPM while you are still getting more improvement as you drop below 100 percent then the.!
Beretta 1951 Manufacturing Dates By Serial Number,
Kanale Shqip Falas 2022,
Articles H