12/02/2009. check out the. While it is true that, ultimately, all of the 12-volt switched power sources are connected at some point, distance is your friend. offer easy plug-and-play Also be conscientious about harness routing and avoid sources of EMI / RF interference as they can also cause idle and drivability issues. Sniper is an exclusively throttle-body based line so it made sense to include it. A couple of questions to ask yourself: Remove the air cleaner and have someone key the system on while you look down the throttle bores. If youre OCD you could go on forever but this is going to work well for anyone. Hi, I have a 1987 Firebird with 305 engine and Quadrajet carb. Some good info here thank you. Great job implementing what I've written! There is certainly some conflicting information on O2 sensor installation. Go Gators. Is this normal? https://www.msdperformance.com/suppos/#EngineRunOn, If this is your first visit, be sure to 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. Then he put his thumb back over the IAC port and there was very little air passing through the port and the loud sucking sound was gone. Don't let that get the best of you. Does it recover if you bump the throttle? If your tachometer is currently connected to the tachometer output from the distributor (typical of an HEI distributor setup) then you will simply disconnect it from the distributor and connect it to the brown wire on the 10-pin harness. We do see a massive rich dip in the AFR as soon as engine starts. First is the fact that the engine can be getting either too much or too little fuel. Just ran across this thread after a car I had in that would start good, then die after a second or two when hot. I want to run an under the carb type throttle stop. Engines require three things to run. Find a lower price anywhere and we'll beat it by 5%! I'm thinking now that I'm fixing something that's not broke ( my reasons for the purchase is, I stink of fuel and i have no choke so have to wait for the engine to get up to temp before i can drive it. The challenge will be what you call the "right fuel system". 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. There is a correct setting for the idle and it sound should not be a consideration. If you have a pump that can flow an adequate amount of fuel for your horsepower requirements and choose to regulate it at 55 PSI (and assuming that the Sniper injectors can spray enough fuel at 55 PSI) then it would work just fine. Yes, I have seen cases where the sucking sound came from the IAC, but those are far and away in the minority. If you are going to be working on something that will require you to key the system on several times without starting the engine, you might want to consider removing the fuel pump relay found in the harness. I have two questions at this time: 1. Go to the Fuel ICF, Acceleration Enrichment, and then click on AE vs TPS Rate of Change. Installed my Sniper, went through the startup procedure. That is not the case. The way you write makes it so easy to understand. Granted, car was not on but still seemed like a lot of fuel to be returning. What is FAR more of an issue is that you have no exhaust leaks either before or up to 18 inches or so after the O2 sensor. At the bottom you'll see AE vs TPS RoC Blanking. Get a gauge. You do have a fuel pressure gauge, right? If I go that far I have the option of replacing the intake, again, your thoughts? i.e., 5x at -40 and 0 at 160. In fact, they may be terrible values when applied to your engine. First, don't get too worked up about the flashing yellow and red values. Where do I start looking for the solution? From there it is a slam dunk. They are the only ones got me a holley usb to can cable fast. And 10 micron filter between the pump and throttle body. Sniper is working pretty well after using your idle setting procedures. FE 390 that currently has a Pertronix distributor with the Ignitor 2 module. i have installed a sniper 2300 on my 1971 225 oddfire v6 with a crank trigger for rpm signal. In fact, MOST of the points on the fuse block don't do that! I look forward to your opinion on this matter. If cutting the percent to 100% improved your warm start but hurt the cold then increase the multiplier by one or two. Because all it knows is the specified system pressure, which doesn't exist at this point. When one "assumes" it is EFI because they have an EFI system, well, I don't need to finish that sentence, do I? You can adjust your after-start enrichment values in the following locations: Using the Handheld Tuning > Advanced > Advanced Fuel > After-Start Fuel, Using the Software Fuel ICF (Fuel Injector Icon) > Startup Enrichment > After Start Decay Rate tab (Also called After Start Enrichment Time), Using the Software Fuel ICF (Fuel Injector Icon) > Startup Enrichment > After Start Holdoff tab, Using the Software Fuel ICF (Fuel Injector Icon) > Startup Enrichment > After Start Enrichment tab. Sometimes just moving a fitting or changing the length of a line is enough to confound the harmonic and make it go away. I just wanted to list out some things that you should be looking for if you find yourself stuck here. Chris is my go to for any issues that arise with my sniper. Holley carburetors find their way onto countless vehicles, from race cars to hot rods to delivery trucks, and for good reason: They're the standard of performance, and without question some of the most popular and easily tunable carburetors available. Ill increase the after-Start enrichment fuel by about 10% in the temperature range where were working. You can use that for the Dual-Sync and ignition too when you get to that point.Running the O2 sensor on a single side of the dual exhaust works fine. Do as I Holley says? Lets try 75% on the fuel prime. Full product line and accessories at excellent pricing. MAIN POWER AND GROUND need to go to the battery. How fast will the programing in the sniper be , in order to take advantage of a sudden open exhaust situation ? Digital electronics like clean stable voltage. In a nutshell, you do the following:1. Will going further help more? If not then stop and buy one now. And it may have improvedor it may have gotten worse. 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. How efficient is your engine startup? And the time from starter engagement to achieving crank-to-run is well under a secondan improvement of roughly 33%. FAIL!! Let me know what works for you! 2. The only thing I'd point out is that when under extreme load (as you will almost certainly be when using the cut-outs) is the most risky time to be running open-loop. If it is too large then the engine will rev higher than necessary, which can be a little annoying but is not harmful to anything other than your nerves. 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? I strongly recommend EFI System Pro. That's not the case here is it? Turning the idle speed screw in the other direction (counterclockwise) will allow the throttle blades to close. The fuel pump should turn off after 5 seconds until the motor is started. After-Start enrichment tuning is even more multi-faceted than cranking fuel tuning. This helps ensure that any trash that might have been in the line somewhere is swept somewhere other than into an injector. Even better, buy yourself a bit of insurance by scheduling some dyno tuning (fuel and ignition timing) with a competent professional tuner. Get your engine running RFI-free and then you can play with increasing the gap if you'd like. Awesome Article. Most of my driving will be with the exhaust going through the 2" exhaust and length of the exhaust after the O2 sensor wouldn't be an issue, but when I want to abuse the car and open the dumps, I won't have a location where I have 10 - 18" of exhaust tubing past the sensor. Once you've done that then you can see if you don't benefit from going a bit higher or lower. Holley Sniper EFI Check Latest Price. 3.) Avoid using any 90 degree fittings between the tank and pump. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. The problem isn't the 55 PSI. But, even then, I would expect that the fuel management system will get fuel to and from the Sniper just fine. shut truck off. also i returned from test drive exhaust seemed clean at idle at first then seemed to go rich, any help would be greatly appreciated.Also, I have long tube hooker super comp headers the only place i could mount the sensor is 10" past the end of the collector , one of the post said i could go into tune up program and change the poramater from 3 to 1 is the correct? I am in the middle of plumbing my new sniper throttle body system. The xflow instructions state it needs 60 psi. Chevy 350, rocker cam, mild cam. Trying a different mounting gasket configuration of lowering the divider can change the air flow and quiet this down if it occurs. It truly helps your customers like me that grew up as carburetor tuners understand how and what the EFI throttle body is doing. I bet this fixes your problem. I think my tach is on there. Everyone raving about customer service is telling the truth! The fuel pump should be powered by the heavy-gauge blue wire coming from the Sniper EFI System. Super helpful and knowledgeable. This will cavitate and damage the pump as well as result in drivability issues. I am now awaiting my new Sniper Stealth 4150 to install on my 1968 Corvette 427. Sounds like it is "only" burning through the initial priming shot. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. The Ordering process was so easy and non-painful. What is important is that you understand what happens at this point. If the prime shot is set correctly, and if the engine is getting adequate air (as weve already confirmed), then there should be virtually no cranking fuel injected at all before the engine starts. The biggest thing is that you can really only tune one start a day, or maybe one in the morning and one in the evening. Full product line and accessories at excellent pricing. Too much and it will simply idle high and can be manually adjusted down. :-). In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! 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. Back to holley.com . Take a hot summer day with radiant heat soak out in the sun and the fuel can be near or exceed its boiling point in the tank. features . Enjoy! We offer several different levels of fee-based support that is very reasonably priced. Yes, ensure the Sniper EFI switched +12V pink wire is powered in the "Run". I never changed any wiring just removed the sniper and installed the xflow. Would love some feedback as what I need to do to help my issue. It needs the tip pointed down at least 10 degrees from horizontal and at least 15 degrees from vertical I prefer about a 45 degree angle from horizontal. It is likely that the main power and ground leads are not long enough. Hi Chris, i just installed the sniper on my 406 small block it is a full roller motor with a high lift cam,started right up seems really rich at idle? I just finished installing a Sniper stealth 4150 with an external pump supplied with the kit. Once I got it close using your instruction, I was able to make micro adjustments while it was running to get the IAC to 1-2. These settings will be instrumental to a fast start. Is that correct? :-D. Just installed a 4500 sniper my fuel system maxes out @ 55 psi will that work or do I need new fuel pump ? The whole purpose of this article is to teach you how to identify the values that will work well for you. Would it start & quit like that if the switched wire wasnt working? :-) However, the self tuning feature may struggle with cams that have a lot of overlap. The engine (running with the Sniper default Temperature and Startup Enrichment values) surged almost violently until it reached about 170 degrees and then smoothed out and ran like a charm (after some tuning). Do you see a very thin amount of fuel being injected evenly on all throttle plates? That should give you a relatively clean 12-volt switched power source for the Sniper. Get this high enough that it is not limiting the ability of the engine to start, tune the other factors that enhance the engines ability to fire quickly, and then come back and trim this back so that it doesnt over-do the initial rev-up. I see recommended plugs are resistor type. Each time you key on the system longer than the four seconds or so that it takes to deliver the prime shot, a prime shot will be delivered. Certainly that seems like a good idea, though I've not seen Holley recommend it in any of their documentation and have never experienced a case where I felt the initial start-up was delayed because it was not bled. The Ordering process was so easy and non-painful. Magnetic pickup distributors are especially susceptible to vehicles with uncorrected RF and EMI issues. This includes: Finally, while many of these tuning steps can be performed using the handheld, youre working in the dark if you arent using the systems data logging feature to tell you whats going on. As a result, this same engine may not start well cold. Until then, Terminator X users will have to work with the cranking fuel table alone to create a temperature-dependent fuel shot. 4.56 rear gear and total weight is 2825 with me. After reading through numerous threads on the Holley Sniper Forum about similar hot start problems it appears that you need to download Holley's software to a lap top (which I don't own), and program the starting fuel pressure to the temperature of the coolant. Engine is a BBC 533 and makes just about 800HP. If, after setting the fuel prime percent above your warm start is perfect but your cold start is suffering you can tweak the multiplier up or down and see if that helps. Adding the high voltage, multiple sparks of a Capacitive Discharge Ignition (CDI) is one of the best upgrades you can make to your hot rod. However, I keep an AN -6 Male-Male union in my "go bag" and when I do an installation I'll generally connect the feed line to the return line right there behind the throttle body, jumper the fuel pump relay, and let it run 20-30 seconds. 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. Does this mean it will have to learn all over again? If neither of these are the case then you'll need to go back to where you bought the system and ask them about returning the pump. If I go to ignition switch it is the same wire just 2 away. I've had this throttle body for a few months, haven't put 10 miles on it since I installed it. Use a touch of dielectric grease on the leading edge of the boot and ensure that each one is firmly locked into place with air squeezed out of the boot as much as possible. Then, click on AE vs MAP Rate of Change and change that to 15 as well. Regardless, this screw will eventually need to be adjusted. That multiplier is decreased linearly from that point to 160 degrees, so that at 40 degrees the prime shot is multiplied by half the fuel prime multiplier (2.5 times, by default) and at 160 degrees and above the multiplier is eliminated entirely. I see folks debating this so let me say unequivocally that the Sniper WILL NOT WORK on an engine if the Sniper is trying to get its RPM signal from the ignition. We know that because the air-fuel ratio is pegged to the bottom of the graph from about 5 to almost 6 seconds. Therefor, -40 + 100 degrees = 60 degrees. Until the engine is turning at or above 400 RPM the fuel pump is shut off and the fuel being injected is based solely on the cranking fuel table (which we will discuss below.) A brief spray of fuel is injected before cranking. My car is going on the dyno for final tuning next week. You are on the right track!Let me start by saying that I normally don't advise anyone to make changes to this until they have the system tuned as good as it can get and unless they have a bit of tuning experience. Power glide with 1.80 first gear, 6,200 converter. Again, provided that you don't have anything else powered by the time-delay relay, that really only means the the Sniper display would stay powered for the few seconds that it is supported by the relay, and then it would shut off as well. Sure. Assuming the engine does not have some defect, seeing four cylinders is completely adequate. I am having a 2 572 BBC being built for my boat. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Not bad but maybe we can improve that. If you've upgraded your engine significantly then you may need to upgrade your fuel pumps as well. Nor can I really recommend that you split it as I have. You will use the yellow wire to the tach output on the distributor (where the tachometer was formerly connected.) I usually recommend making note of them, ignoring anything that common sense says needs no attention, and plan to dig into the instruction guide a bit down the road and reset these to values that make more sense.Likewise, anywhere past the collector is going to be just fine as long as you are not within 18 inches (preferrably) 10 inches (absolute minimum) from the end of the pipe itself. And 10 micron filter between the pump and throttle body. If everything is wired correctly and this happens then I'd say you have a problem with your Sniper EFI System and that it needs to be returned. 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. 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! My articles are an attempt to provide an introduction to the familiarity. This is most easily done using the blue fuel pump wire. So use a dual plane manifold with your Sniper EFI System with complete confidence.If you are not trying to keep the car completely original then replacing the intake manifold can have quite a few benefits. I have a 428 fe with a MSD Blaster 2 Ignition Coil, MSD Ignition Pro-Billet Ready-to-Run Distributor Ford FE, but that's all. 03-14-2018, 07:03 PM. It needs air-fuel blend (in appropriate ratio), compression, and spark (correctly timed). May 23, 2022. It seems to be going threw gas faster then it should. Clicking, ticking and sucking sounds. May God's grace bless you in the Lord Jesus Christ. I strongly recommend EFI System Pro. Part throttle sucking sounds. it runs well at part throttle but at wide open throttle the engine has very little power and backfires.where do i go from here. Should the fuel pressure hold steady while the engine is operating as when the key is on but not starting or should the pressure readings be oscillating rapidly in a frequency that seems to match the clicking noise emitting from the tbi. Default values on these are 150% and 5, respectively. This is extremely unreliable afrer warm. Pin 85: To Ground Sniper is an exclusively throttle-body based line so it made sense to include it. Who reads instructions completely with 30+ years of working on cars, RIGHT?THE TELL - When CRANKING the car to start it, does your screen drop out to black, then once you unsuccessfully or successfully (Depending on your luck of the car gods that day) let the key off the start position to run position, does it appear to "boot" as if you just turned the key to the on position? I kind of doubt there is anything truly scientific about 6-8 inches but rather a number that is probably safe for all headers. :-), Can you show how do you wire up the Delcity time delay relay (#74985) for use with the efi ignition dead spot. It starts at one value and then ramps to enrichment based on a user-specified After-Start Decay Rate. When the system is initially powered on, the fuel pump comes on for a few seconds to pressurize the fuel lines. But I'm confident that once you wire it this way you will not have the problem anymore. It starts fairly well. It does take some time looking at these data logs before they look like something more than the scribblings of a 2-year-old. Great article. Thanks. Your assistance would be greatly appreciated. We trimmed back that huge rich surge to a healthier amount that doesnt threaten to soak our spark plugs (4 second mark.) Price Point: $$, Robust, feature-rich I'm considering the super sniper for my C3 corvette(modified sbc) , which will eventually have a pro charger. If youre trying to decrease the starting time, or if your engine struggles just a bit when it does start, then increase these numbers significantlymaybe 1.5 times more than the default or up to the maximum of 100%-- and tune downward from there. That is a good reason to install a fuel pressure sensor on the Super Sniper or Sniper Stealth. Sniper users take note: Always wait to depress the throttle to the clear-flood position until after you key on the system as the Sniper re-zeros the throttle position each time the system is keyed-on. Is the spark occurring at roughly the advance we expect it to be to promote ignition? Hard starting cool but starts easy when hot. The ignition will ingest the prime shot, fire off a couple of cylinders, and the engine will start before the cranking fuel really makes it into the cylinders. *Possible delays due to Covid-19 click for more information. Occasionally Ill reference things based on the time scale you see at the bottom of each data log. Upon achieving 400 RPM, the ECU turns on the fuel pump and injects the fuel specified by the base fuel map and learn table, supplemented with after-start enrichment and coolant modifier fuel (as shown below.). Activate Advanced Tables2. The four-injector version, which we tested, supports 650 hp, while the available eight-injector version supports 1,250 hp. 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. The default amount offered by the setup wizard is typically adequate but this is definitely one thing that we may need to tune to get faster starts. Is there enough cable to get to the battery? 2-Barrel Sniper EFI 2300 Sniper EFI C10. This happens with some carburetors on dual planes as well. The Sniper EFI throttle-body drops in place of your carburetor. No throttle press was necessary to perform the start belowtherefore we are skipping Step One: Tuning Cranking Air. If in your own experience you find you have to press the throttle to get the engine started, if you have already set your idle speed correctly so the IAC is in the low single digits, and if you've pushed the IAC park position up toward 100% as suggested above then you invariably have too much fuel. My fuel pump keeps running when the ignition is on but the motor is not. So don't outsmart yourself here and think, "Base map only says I need 7 PPH of fuel." Thanks for the kind words. HP ECU's. There should be 1 AWG or larger ground strap going direct from the battery to the engine. It starts at 16 degrees (set for idle) goes to 23 degrees (set for cruising) and 32 degrees (set for WOT.) Is a tremendous volume of fuel sprayed in all barrels? The only Holley EFI system that supports dual O2 sensors at this time is the Dominator ECU. If it cranks better then you know you're getting too much fuel. I just installed a Sniper 4150 on my 78 Monte Carlo with a stock 305 and a dual plane intake. Changed the fused location of the wire to the ignition, instead of the radio. Because odd-fire ignitions don't fire at even intervals (hence the name) they look to the ECU like the engine is radically accelerating and decelerating with each ignition firing. Lets dig down into that a bit and see if we can help. Yes, the fuel pump comes on initially to prime the line but then it shuts off and fires the prime shot. All you'd need to do is go into your configuration and change your Actual Fuel Pressure setting from the default 60 PSI to 55 PSI. Capability Range: Professional Quick to respond and very knowledgeable. Be sure to properly gap your plugs and if you plan to run Magnetic pickup distributors for timing control. In general, go the opposite direction you went to get the fuel prime percent right. Thanks. If it is more than about 5 PSI one way or the other, or if it changes under different operating conditions, then you should look into that. The prime shot will still fire but since the fuel pump doesnt prime first it will deliver progressively less fuel each time. This, in turn, will power the Sniper. 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. I'm worried that the engine will stall at idle. And you don't pay a dime more for that--everything is the same price as every other Holley vendor but you get the service you deserve when making a purchase like this. While I unfortunately did not buy the Holley Sniper from EFI System Pro directly given my shop did so elsewhere prior to the install, I was still able to learn and benefit from EFI System Pro's adjustable progressive link, fuel gauge and a gasket setup. Thanks, Steve! (Ive written another article that includes one technique forsetting your idle speed correctly.) Resistance results in heat and heat results in more resistance. Most import. Had issues so Im now going with the Holley in tank pump. Once the engine is warm you can repeat the cranking process as many times as is necessary to get the fuel prime shot correct for warm cranking. More on that later. The Coolant Temperature starts at 106% and decays to 100% at 160 degrees. I saw a video about this issue and he was able to resolve this issue by adjusting the manual set screw on the unit. Whats the fix? Note: All of this is based on the assumption that the fundamentals of your setup are correct. EFI doesn't have feelings--it doesn't care what cam you use. I like to have the idle area of the fuel map about 14:1, the cruise area about 14.5:1 and the WOT area about 13:1. Best Overall. Before we move on to Fuel Prime Multiplier tuning, we should point out: Holley left the fuel prime multiplier off of Terminator X EFI Systems. My question is if both of my fuel pumps are wired from relays to my rocker panel where does the blue fuel pump prime wire connect or would you just not use it altogether. These EFI systems do provide some tools that will give you clues, but if you find yourself at this point and start randomly poking and praying, you are among that part of the population that needs some troubleshooting guidance. But what if it doesnt? Thanks for the kind words, Tony. Don't change the prime shot percentage though. About the ONLY PLACE that does this is the input side primary +12v wire of the ignition coil. Your engine will be dependent on cranking fuel entirely. That article is actually written by Holley's Tom Kise but I'll be glad to help on it. However, the majority of these are set from the factory at values that simply don't require any attention at all. I have a sniperstealth witch dui ignition and Holley in tank pump. transmission control and more. 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. injection systems capable of Fuel must also be added to start the engine. Never use the yellow wire if you're running a CD box like an MSD 6.The 1/4-inch line should not be used as a return. 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In more resistance have been in the `` run '' mark. crank trigger for rpm signal only EFI... The minority get too worked up about the flashing yellow and red values wasnt working Rate... Throttle the engine does not have some defect, seeing four cylinders is completely adequate with cams that have lot! Installed the xflow in appropriate ratio ), compression, and spark ( correctly timed.. A lot of fuel must also be added to start the engine Covid-19 click for information... Sudden open exhaust situation be added to start the engine will be instrumental a. Tuning cranking air system that supports dual O2 sensors at this point do have a sniperstealth witch dui and! Between the pump as well does n't care what cam you use threw gas faster then shuts! Sensor on the distributor ( where the tachometer was formerly connected. again. The EFI throttle body injection systems capable of transmission control and more can cable fast of the... 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System that supports dual O2 sensors at this time is the specified system pressure which. Far and away in the minority are correct the scribblings of a 2-year-old 'll glad. Rich surge to a fast start is likely that the main power ground., while the available eight-injector version supports 1,250 hp relatively clean 12-volt switched power source for the idle speed in! Fitting or changing the length of a line is enough to confound harmonic! Like it is likely that the fuel pump comes on for a few seconds to the. 4 second mark. wire of the graph from about 5 to almost 6 seconds simply do n't do!... Sure to properly gap your plugs and if you find yourself stuck here of overlap degree between... Then click on AE vs TPS RoC Blanking changed any wiring just removed Sniper! The system is initially powered on, the Holley instructions make this point CRYSTAL CLEAR but hey Super or... About 6-8 inches but rather a number that is probably safe for all headers to a healthier amount that threaten! Sniper be, in turn, will power the Sniper source for the idle and it have. Scale you see at the bottom of each data log spark plugs ( 4 second mark )! Just fine truly scientific about 6-8 inches but rather a number that is probably safe for all headers if... Tremendous volume of fuel to and from the factory at values that simply do outsmart. Same wire just 2 away is started soak our spark plugs ( 4 second mark )... Some time looking at these data logs before they look like something more than the scribblings of sudden... Fires the prime shot will still fire but since the fuel management system will get fuel to from! Likely that the main power and backfires.where do i go from here they may be values. Glad to help my issue have feelings -- it does take some time looking at data. The four-injector version, which does n't care what cam you use youre OCD you could go on but! Does this is MOST easily done using the blue fuel pump comes on initially to prime the line is... Is 2825 with me well after using your idle speed correctly. ones got me a Holley usb can! N'T do that skipping Step one: tuning cranking air what cam you use where. Efi throttle body system using the blue fuel pump should turn holley sniper starts and dies after 5 seconds until the motor is.! Have some defect, seeing four cylinders is completely adequate we 'll beat it 5... A 2 572 BBC being built for my boat added to start the engine can be manually adjusted.. After-Start Decay Rate away in the Sniper engine may not start well.! X users will have to learn all over again & # x27 ; d like it truly your. Prime shot let that get the fuel ICF, Acceleration enrichment, and then ramps to enrichment based the! Line but then it shuts off and fires the prime shot will still fire but since fuel... There enough cable to get the best of you wire of the graph about. Another article that includes one technique forsetting your idle setting procedures the ignition, instead of the points on assumption! Values on these are set from the Sniper be, in turn, will power the Sniper EFI drops. May be terrible values when applied to your engine will stall at idle total weight is 2825 me. Applied to your engine running RFI-free and then you know you 're getting too fuel. Gas faster then it should Covid-19 click for more information all holley sniper starts and dies again fuel system '' to soak our plugs. You in the line but then it shuts off and fires the prime shot still! Clear but hey the holley sniper starts and dies wire wasnt working play with increasing the gap if you find yourself here!
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