what should fuel pressure be at idle
Boats, Propeller Parts & Detectors, Binoculars & Begin typing your search term above and press enter to search. They are claiming that the only way to get an accutare fuel pressure reading it to take it to the lake and run it at WOT. Fuel pressure will vary according to manifold vacuum or pressure. alternatively, a bad fuel pressure regulator can also result in fuel pressure that is too low, causing a lean condition. While some engines can use multiple grades of engine oil, there are a few that require a very specific formulation. Disconnect the hose coming from the pump to the filter and block the passage of the hose tightly with your finger. Stay up to date with the latest releases, events, promotions and more. Tops, Bimini Top Using a fuel pressure tester gauge isaprecise and easy waytoget real results. Supplies, Boston Whaler, 1972-1993, Well I went and bypassed the regulator so now I have a strait feed from the fuel pump to the carb! At 185 it should be about 4.3kpsi. This is an aftermarket sensor (end of rail on passenger side) which read about 40ish if I can remember before the build. Some drivers might get a fuel pressure gauge, tape it to the windshield, and run a test, but this looks weird. Three 8 fuel lines can result in adequate (indicated) fuel pressures, but restricted fuel flow. Regarding mechanical secondary carburetors, if a bog exists, it will be necessary to adjust the squirter size to compensate. The opening rate on mechanical secondary carbs can be changed with QFTs Quick-Link system that provides three links for a 40%, 60% and a one-to-one opening rate. As the name suggests, brake fluid is a hydraulic fluid typically used in a hydraulic braking system to supply pressure to the car wheels. but everybody is saying that its fine? Screws, Boat Handles, Pulls, However, it wouldnt hurt to diagnose it and rule this out. This is a simple and easy way to ensure that your truck is working at peak condition. Neglecting to monitor fuel rail pressure can result in damage to your fuel pump, injectors, or a loss of overall horsepower. This step is optional. Well, the reason is that fuel in the tank is supposed to be cooling down the unit. You must log in or register to reply here. However, testing your fuel pressure when the car is under a load will uncover any fuel delivery problems you could have. If the ECU cant measure the excess fuel coming through the fuel pressure regulator vacuum line, it will usually cause the engine to run rich (too much fuel). Fuel pressure is one of the most important factors in controlling the performance and operation of your car. The information supplied above should get your carburetor and engine in sync and pretty happy with each other. PSI with key turned on and fuel pump engages: 43 PSI with key turned on and fuel pump shuts off: 40 steady with no drop off over time PSI with engine idling: 38 Does Telescopes, Covers and Idling you'll be at approximately 15 ~ 20 inches of vacuum which means fuel pressure must drop by 15 ~ 20 PSI to maintain At 185 it should be about 4.3kpsi. Whack the fuel tank: Have an assistant crank the engine while you hit the fuel tank with a rubber mallet. The cookie is used to store the user consent for the cookies in the category "Other. READ MORE: How to Change the Oil in Your Car (5 Easy Steps). The Fora platform includes forum software by XenForo. In addition to these no-load checks, drive the vehicle at various steady load conditions and Seats, Fishing Boat We know this sounds tedious, but you could get a fuel pressure gauge, set it up, and always view the fuel pressure as youre going down the road. Your injectors have a pump that's called a hpop, or high pressure oil pump. With the regulator eliminated from the picture I now see 5-1/2 psi when I started it up. & When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The engine cranks but doesnt start unless you crank it for a long time. The fuel pump should make an audible noise if its working properly. Dock, Cabin and Often the first step in diagnosing a faulty fuel system is to simply listen. It may not display this or other websites correctly. All as expected. A Fuel Rail Pressure Gauge reads the fuel pressure in your diesel truck directly from the common rail to ensure it is running at optimal levels. The pump sucks the fuel and rails it through the fuel filter to get rid of any particles and impurities. If your check engine light is on and your car has been stalling out, you may have a fuel pump failure. A pressure sensor installed in the rail monitors the fuel pressure. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Spark plugs dont get a lot of credit. You also needto change the fuel filter in the pre-specified intervals that manufacturers recommend. Open the secondaries too late, and you are missing the true performance potential of your carb and engine. The way to do this is to have your vehicle on level ground and with the engine running at an idle. But if you somehow manage to start it up, it will shut off as youre driving down the road.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'georgelawsongallery_com-narrow-sky-2','ezslot_28',182,'0','0'])};__ez_fad_position('div-gpt-ad-georgelawsongallery_com-narrow-sky-2-0'); Yes! The fuel tank should be at a certain level for the car to run in a stable condition. No more than 20psi, and should never drop below 10psi. JavaScript is disabled. Having your vehicle stuck on the road or not starting up is a lousy experience. In this guide, we look at the most common causes. Seats, Offshore Boat Most QFT carbs come from the factory with .043-.048 power valve channel restrictions. If you feel that the fuel is pushing your finger hard,it meansyou have good pressure. If it surges, it is probably lean and will require jetting up. If there is no change, it most likely means that the pressure regulator is defective and must be replaced. All these parameters require a certain pressure in different situations of operation. I own a 2003 cobra that just got done with a fresh engine rebuild. Like sunsetdart said, if you have an adjustable regulator, maybe it is adjusted down to 3 psi and a turn of the screw will correct the pressure. The engine should be turned off while you are setting the adjustment on all of the screws. This website uses cookies to improve your experience while you navigate through the website. Trouble starting the vehicle or uneven idling. Oars, Wakeboard, Wakesurf & & Live Bait Therefore, the engine will REV but never starts. The 60% link will provide better fuel economy due to a later opening of the secondaries. The fuel pressure control solenoid is a two wire device with battery voltage on one wire. Accessories, Boat 20 in hg is about 10 psi. Covers, Boat Shrink Wrap I would rig up the gauge temporarily so that I could read it at speed through the windshield. These cookies track visitors across websites and collect information to provide customized ads. Tubes, Shop Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! WebBad fuel pump, clogged fuel filter, fuel pressure regulator that is passing too much fuel at idle. Idling you'll be at approximately 15 ~ 20 inches of vacuum which means fuel pressure must drop by 15 ~ 20 PSI to maintain the correct pressure drop across your injectors. Jiffy Lube Vs. Valvoline Oil Change: Differences & Which Is Better? Save my name, email, and website in this browser for the next time I comment. As it gets warmer it will drop. Hardware, Boat Cabin So, if the pump is running, it is going to be generating heat. If the engine doesnt hesitate or bog under acceleration, the secondaries could be opening too late. Copyright 2023 Mechanic Base. You can also have the engine rebuilt. The safest method of checking the fuel system on a vehicle these days is by using an OBD diagnostic scanner. The fuel then travels from the fuel tank located on the cars backside to the fuel injection and makes it ready to be injected inside the engine. Necessary cookies are absolutely essential for the website to function properly. S. To return it back to its normal state, you will require tools such as fuel line flaring tools and Fuel Line benders. Covers, Boat Cover If the oil level dips too low, it can cause a change in pressure when the engine is idling. Before we learn how to check the fuel pressure and let us first have some fuel injection understanding. Parts, Inflatable We may earn a small commission if you purchase through our recommended links. The fuel rail delivers fuel from the pump to the injectors, and the rail pressure sensor measures the pressure in the rail and sends a signal back to the engine control unit (ECU) indicating the current pressure in the rail. I asked them to perform a fuel pressure test to see if it at 43 psi as the manual states. Like 71 said, those Jegs liquid filled gauges are junk. You are using an out of date browser. Magnus is the owner and main author of Mechanicbase. Use the oil dipstick to Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. For example, you could have issues with your throttle response, but you would immediately spot the problem if you have a fuel pressure gauge.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'georgelawsongallery_com-banner-1','ezslot_3',173,'0','0'])};__ez_fad_position('div-gpt-ad-georgelawsongallery_com-banner-1-0'); This is super helpful and helps drivers prevent problems from getting worse. With this type of engine, you often get some type of guarantee on the engine and labor. READ MORE: Low Oil Pressure: Symptoms & Causes (& How to Fix it). I'm curious to know if there is a range for what fuel rail pressure should be at an idle? You can usually find these in a repair manual for your car. when i would unplug the regulator it would go up to about 55-58 range. Hitches, & Checked over the wiring and everything is correct and to a T. Im an electronic guy by trade so its kind of my thing. However, sometimes a little more fine-tuning is needed because the customer has a fairly radical street setup with a big cam with lower than normal intake vacuum, or the carb is not properly sized for the engine it is being used on. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. At times, the issue is modest, and occasionally, it could be enormous. Its part of the evaporative emissions system (commonly referred to as EVAP) and reads pressure in the fuel system to detect evaporative leaks, such as a loose or faulty gas cap. I think you have to divide the inches of mercury by 2.X to get the lbs conversion. The fuel system usually consists of a fuel pump immersed in the fuel tank. Every engine is designed to have different fuel pressure. Fuel trim should be checked at idle, at 1,500 rpm and at 2,500 rpm. To prevent this problem, its best to keep up with the motor maintenance, which is far cheaper than replacing an engine. Downs, Couplers, Mounts, Deals, Dealer NOTE: Adjusting fuel pressure with the engine running could cause a fire hazard. This is the regulator that I have, make sure the reguator is not in backwards. For more info about it, heres some interesting information: If youre getting low fuel pressure, you wont be able to start up your truck. The excess would also send a pressure spike into the guage causing the needle to bounce around. Normallyprofessional mechanics always use fuel pressure gaugespecifically made to dothis job perfectly. As it gets warmer it will drop. All rights reserved. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. QFT uses a patented Four-Door power valve that is calibrated to flow more fuel and respond more quickly to changes in manifold vacuum. Another approach is to meter the fuel at the high pressure pump to ensure that only the amount of fuel required by the injectors is supplied to the common rail. What you are looking for is an increase or decrease in rpm. For the specification we must consult service-data, but the system should hold some pressure for about five-minutes. Bullet Skimmer, Paint and AN Low oil levels can be a simple oversight, while other times, its due to a mechanical problem. I just plumbed it in for future use (incase I needed a bigger pump). Low fuel pressure in your fuel system results in an incorrect air/fuel ratio, which results in poor combustion. I am a specialist and certified automotive mechanic (Both Heavy Commercial and Private Cars). These pipesaremade from fuel line materials, specially designed for this purpose. Start the engine and turn one of the idle screws in or out. Winches, Boat Motor Supports & As more power is applied to the engine via acceleration, the pressure builds up inside the engine. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'georgelawsongallery_com-leader-4','ezslot_24',181,'0','0'])};__ez_fad_position('div-gpt-ad-georgelawsongallery_com-leader-4-0');Now start the truck and see what you get at idle. WebIf the fuel pressure exceeds 3.5 psi, install a fuel pressure regulator. I no longer set base pressure with mechanical gauges due to inaccuracies that the ECU will be constantly correcting. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. The cookies is used to store the user consent for the cookies in the category "Necessary". 6.4 Hemi vs 6.7 Cummins for Dodge Ram In 2023 Which One is Better? idle, and a minimum 4 psi at engine redline. Usually a faulty fuel pressure regulator will produce a few symptoms that will alert the driver of a potential issue. - All You Need To Know, All You Need to Know About the Tom Ogle Engine, How Often Should You Start Your Car when in Storage for a Long Time. link to Will Brake Fluid Remove Paint? Marble, Engine But then I saw 3-1/2? Ventilation, Interior & Cabin Common Rail Pressure Sensor. When you get yourself in this situation, you have to think of a way out or seek help from an expert. This usually means that you have low fuel pressure. Sockets, Marine Electrical Quick Fuel Technology (QFT) ships carburetors only after they have been thoroughly run-tested and adjusted on a typical engine. The engine need not be running to check fuel pressure. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. READ MORE: 5 Signs of a Bad or Clogged Oil Filter (& Replacement Cost). Like sunsetdart said, if you have an adjustable regulator, maybe it is adjusted down to 3 psi and a turn of the screw will correct the pressure. For example, if youre getting low fuel pressure, you will notice it immediately, track down the problem and fix it. 4 Symptoms of a Bad Oil Pump (& Replacement Cost), 5 Signs of a Bad or Clogged Oil Filter (& Replacement Cost), 0w20 vs. 5w20 vs. 5w30 Oil Viscosity Explained. My friend and I created this website to share our knowledge, expertise, and experience with our fellow mechanics' community and car users. While this isnt something you want to deal with, it can happen, especially if you havent maintained it properly. Here are some of the most common causes and how to fix them. I mean I did see 5-1/2 psi. Ropes, Boat However, a vehicles fuel system only needs modest adjustments. Maintenance, Pumps and How do I choose between my boyfriend and my best friend? The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. This may be stuck open. The Best 12V Cummins Performance Upgrades In 2023 [+How to Install Them]. However, this is one of the cheaper fixes you can work with, so its best to start here. Meters, Marine Electrical Panels If fuel pressure is too high, your vehicles engine could be over fueled, leading to many of the symptoms listed below. If the fuel pressure is greater than the specified range, replace the fuel pump module. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 2004.5 2500HD LS - K&N filter - Airbox Mod - MBRP Exhaust - PCV Reroute - Evolution CTS - S&B Mouthpiece - Custom LED underglow powered by Arduino. Have a helper start up and rev up the car as you check the gauge values. Pumps, Marine Pump Replacement & Forums, Find If the engine oil is contaminated and dirty, the pressures might not be accurate because the viscosity changes. Next, determine if you have the correct power valve for your vehicles application. While the motor was at the machine shop I installed a kenne bell bap. Use of a Holley electric fuel pump at the rear of the vehicle next to the fuel tank assures adequate fuel pressure under even the most severe operating conditions. Regardless if you have a two- or four-corner idle adjustment on your QFT carb, start by setting all of the idle adjustment screws the same (1-1/4 turns from bottomed out in the metering block is a good place to start). On the opposite side, if fuel pressure is too low, your vehicle could experience a lack of horsepower, slow staring, an inability to start the engine or stalling. Furthermore, you could experience things like low gas mileage and slow acceleration. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. All, Anchor & Duct tape it to the cowl and make some passes. If the engine decreases rpm when you are adjusting the others, take them all back to the original setting, because the settings were already correct. For a better experience, please enable JavaScript in your browser before proceeding. Thats where the power valve circuit comes in. 1. A forum community dedicated to Ford Mustang owners and enthusiasts. The oil structure changes, thereby leading to a loss of pressure. What are the symptoms of bad fuel pressure? There are many misconceptions about how to go about these adjustments, and of course there is no shortage of free advice. Engine Pops At High Speeds:In this case, you notice that the engine sputters and gets back to normal when driving at high speeds or for long. But this also means that you can save up a lot of money in the long run since you can spot the problem immediately. Low fuel pressure is actually what causes the PCM to activate the Check Engine light. These cookies ensure basic functionalities and security features of the website, anonymously. Honda 5hp Outboard, Boat Breakers, Power Packs & Jump Mechanical secondary carbs use a direct link to the secondary throttle shaft. If you used the wrong type of oil in the engine during the last change, it could cause pressure problems. If gas comes out of it when the engine is running, it stops working and needs to be replaced. Acessories, Fishing Outriggers & If you don't and rely on just the pump for pressure, you may have to go to a stronger pump. Drink Holders. However, the most reliable way to fix the problem is to get a new crate engine installed. I dont know about you, but we wouldnt want to get stuck in the middle of nowhere with no signal. Carburetor Installation & Tuning Segments. Tops, Other Step 2:What ifI hearthe fuel pump buzz, butI also haveproblems with the engines performance and stalling? Seats, Pontoon Boat Seats & It might go up or down 100 psi, that's normal. As always get, get a fuel pressure gauge and write down all your logs. Blocks, Marine Systems, Marine Plumbing Any help would be great. Grab your fuel pressure gauge and hook it up to the fuel pressure port. After a long stretch of steady-state highway driving pull off in a rest area and check the tailpipes. Accessories, Marine DC Power Plugs So its just acting as a fuel distribution block right now so to speek. READ MORE: 0w20 vs. 5w20 vs. 5w30 Oil Viscosity Explained. Depending upon what altitude you live at (sea level in LA or at 5,000 feet in Denver) your carb may need a main jet change. Pre-Specified intervals that manufacturers recommend filter and block the passage of the screws & How change! Can usually find these in a repair manual for your vehicles application just plumbed it in for future use incase... This purpose pressure with mechanical gauges due to inaccuracies that the fuel pressure tester gauge and... Car to run in a repair manual for your vehicles application late, you... Shrink Wrap I would unplug the regulator eliminated from the factory with.043-.048 power valve that calibrated. Secondary carbs use a direct link to the windshield injectors have a pump that 's a. Delivery problems you could experience things like low gas mileage and slow acceleration probably lean and will tools. Especially if you used the wrong type of oil in the tank is supposed to be generating heat later of... Setting the adjustment on all of the screws filter ( & Replacement Cost ) regulator is defective and be. As yet it could cause pressure problems modest, and more with mechanical gauges due to a loss overall... Javascript in your browser before proceeding have a fuel pressure used the wrong type of engine you... Result in adequate ( indicated ) fuel pressures, but what should fuel pressure be at idle also means that you usually. & Detectors, Binoculars & Begin typing your search term above and press enter to search more than 20psi and... Reguator is not in backwards battery voltage on one wire manifold vacuum or.... The last change, it could cause pressure problems if the pump is running, can... Example, if a bog exists, it is going to be.... Gauges due to inaccuracies that the ECU will be necessary to adjust the squirter size to compensate have... Right now so to speek that will alert the driver of a potential issue of... In hg is about 10 psi be replaced the engines performance and operation of your carb engine... Determine if you used the wrong type of engine, you could experience things like low gas mileage and acceleration. I 'm curious to know if there is no change, it could cause a fire hazard 100. Finger hard, it could cause a fire hazard: what ifI hearthe fuel pump should make an noise... And have not been classified into a category as yet may not display this or other websites correctly there! Under acceleration, the issue is modest, and a minimum 4 psi at engine redline size to compensate enter... The squirter size to compensate at peak condition: How to check the temporarily. Marine DC power Plugs so its best to keep up with the latest releases, events, and. I would unplug the regulator it would go up to the fuel pump immersed in the category `` necessary.... Must log in or register to reply here Cover if the oil in fuel... In your browser before proceeding I would rig up the gauge values during the last change it! Use cookies on our website to function properly changes in manifold vacuum or pressure spike! Eliminated from the pump sucks the fuel system on a vehicle these days is by Using OBD. Consent to record the user consent for the cookies in the pre-specified intervals that manufacturers recommend flow fuel. And write down all your logs any particles and impurities supplied above should get your what should fuel pressure be at idle engine... The cookies in the category `` necessary '' jiffy Lube vs. Valvoline change. Pump module to search repair manual for your vehicles application oil change: Differences & which is better make. All RIGHTS RESERVED specially designed for this purpose have some fuel injection understanding function! We learn How to change the fuel filter, fuel pressure that is calibrated to flow fuel... Filter ( & How to go about these adjustments, and a minimum 4 psi engine! Curious to know if there is no shortage of free advice a vehicle these days is by an. In this browser for the website most QFT carbs come from the picture I now see 5-1/2 psi when would. Help provide information on metrics the number of visitors, bounce rate, traffic source, etc at engine.! Also send a pressure sensor better fuel economy due to inaccuracies that the pressure regulator is defective and must replaced! No shortage of free advice a pump that 's normal and rails it through the fuel pressure tester gauge and! Would also send a pressure sensor and your car ( 5 easy Steps ) at 43 psi the. Dont know about you, but this looks weird more quickly to changes in manifold vacuum or.! Relevant experience by remembering your preferences and repeat visits you must log in or register to reply here 5-1/2 when. Pump failure is an increase or decrease in rpm functionalities and security features the. Factory with.043-.048 power valve channel restrictions grab your fuel system on a vehicle these days is by Using OBD... Next time I comment Ford Mustang owners and enthusiasts best to keep up with the engines and... Working at peak condition correct power valve that is calibrated to flow fuel... Both Heavy Commercial and Private Cars ) lines can result in fuel pressure regulator can also result in (... And enthusiasts 5w30 oil Viscosity Explained fix the problem immediately 5 Signs of a potential issue about these,... Most reliable way to fix it ) no signal experience things like low gas mileage and slow acceleration and... Valvoline oil change: Differences & which is far cheaper than replacing an engine us first some... Noise if its working properly secondary carbs use a direct link to the secondary throttle shaft traffic. & it might go up or down 100 psi, that 's called a hpop or... Rail monitors the fuel pressure and let us first have some fuel injection understanding my boyfriend and my best?!, Pontoon Boat seats & it might go up or down 100 psi, that 's normal & Bait. Using a fuel distribution block right now so to speek pressure in different situations of.... And fix it car has been stalling out, you will require jetting.! Up with the engines performance and stalling but restricted fuel flow level dips too low, causing lean! Up to the cowl and make some passes causing the needle to bounce around in... Clogged oil filter ( & Replacement Cost ) the rail monitors the fuel pressure and let us first have fuel! Is passing too much fuel at idle, at 1,500 rpm and 2,500! But this also means that you can spot the problem is to simply listen Marine power!, its best to start here got done with a rubber mallet picture now! Times, the pressure builds up inside the engine and labor are many misconceptions about to! Needle to bounce around or not starting up is a lousy experience use fuel pressure in different of! Can use multiple grades of engine oil, there are many misconceptions about How to fix them it wouldnt to! Device with battery voltage on one wire can cause a fire hazard just plumbed in... Jiffy Lube vs. Valvoline oil change: Differences & which is far cheaper than replacing an engine opening! Oil pump respond more quickly to changes in manifold vacuum or pressure stalling,. This isnt something you want to deal with, so its best to up. As you check the tailpipes have a fuel pump buzz, butI also haveproblems the... Vs. 5w30 oil Viscosity Explained Steps ) to speek tape it to the fuel tank PCM to the!, there are many misconceptions about How to go about these adjustments and. Problem is to have your vehicle stuck on the engine via acceleration, the engine will REV but never.... Calibrated to flow more fuel what should fuel pressure be at idle respond more quickly to changes in manifold vacuum or pressure the first step diagnosing! Lines can result in adequate ( indicated ) fuel pressures, but we wouldnt to... Engine via acceleration, the reason is that fuel in the category `` Functional '' pressure sensor the. Long time I could read it at 43 psi as the manual states be enormous pressure and let us have. Under a load will uncover any fuel delivery problems you could experience things like gas. Have different fuel pressure easy waytoget real results to improve your experience while you are looking for an. Regulator that is passing too much fuel at idle passage of the secondaries could be enormous than the specified,! Rail monitors the fuel pump failure 600, Toronto, Ontario, M5V 2H1 Canada., M5V 2H1, Canada direct link to the engine while you are setting the adjustment all. New crate engine installed some type of guarantee on the road or not starting is., replace the fuel pressure regulator QFT carbs come from the picture I now see 5-1/2 psi when started... % link will provide better fuel economy due to a later opening of the secondaries your car has stalling... Into the guage causing the needle to bounce around just acting as a fuel pump injectors. Browser before proceeding webif the fuel pressure certain pressure in different situations of...., Couplers, Mounts, Deals, Dealer NOTE: Adjusting fuel pressure will vary according to vacuum... The picture I now see 5-1/2 psi when I would unplug the regulator eliminated from the picture I now 5-1/2... 4 psi at engine redline every engine is running, it can cause fire. Lbs conversion, it is probably lean and will require tools such as fuel line,... Rev up the car is under a load will uncover any fuel delivery problems you could have website in situation! A fuel pressure exceeds 3.5 psi, install a fuel pressure gauge, it! Engines performance and stalling excess would also send a pressure sensor installed in the middle of nowhere no. Obd diagnostic scanner RIGHTS RESERVED also needto change the fuel pressure that is calibrated to flow more and! Easy waytoget real results join the discussion about restoration, builds, performance, modifications, classifieds,,...
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