Hitting Fuel Pump To Start Car

High fuel pressure can also be caused by a faulty fuel pressure regulator. A weakened fuel pump can cause the vehicle to take more cranks to start than normal, and in more serious cases may even cause the vehicle to require multiple turns of the key before it will start. No bleeder valve. The intertia (cut off switch) is in the hatch and basically cuts power to the fuel pump if you get hit so your fuel pump isn't running pumping fuel to a possible fire. By turning the key several times, you are priming the fuel system up enough to start the vehicle, so you definitely have a fuel issue. I can tell the fuel pump is not running. Until recently, it took about 20 minutes to replace a fuel pump and cost about 30 bucks. The 2003 Chevrolet Cavalier has 35 problems reported for fuel pump failure. It provides 2 to 4 micron penetration into the surface, therefore lessening heat and friction and quieting power steering noise where applicable. How to Fix Your Car (Briefly) with. Hi guys, just got into the car and went to start it up and the car won't crank. Always monitor your fuel levels to prevent this problem from arising. However, when the contact attempted to start the vehicle, it would not respond. Be sure and tie it out of the way of the engine or anything that could hit it or spark near it. When we are running a performance car at the limits, having a fuel pump start to lose voltage, and therefore lose flow, can cause catastrophic problems. Keeping the petrol tank safe For safety, the petrol tank is placed at the opposite end of the car from the engine. Why Does it Take Longer for my Car to Start When it's Cold?. Car mechanics – diesel won't start. Car kept cranking but won't turn over. Make sure the vehicle is off and safely parked on a level surface. 92 Accord DX failing to start, cranks over good but fails to start. Part of what makes an internal combustion engine run smoothly is the constant even pressure created by the pump as it moves fuel into the system. NOTE: Checking that power (10 to 12 Volts) are actually reaching the fuel pump is a very important step before replacing it. com go to this site and you can find the cost of repairs for this truck. It provides 2 to 4 micron penetration into the surface, therefore lessening heat and friction and quieting power steering noise where applicable. Checked all fuses and relays. Parked the car after driving it 60 miles and it would not start. Or, checking for 10 to12 Volts at the fuel pump connector itself (by the gas tank). On vehicles without a fuel delivery module, remove the negative and positive connectors from the fuel pump, Figure 1. If you can hear the pump start running when you hit the tank then it could be an earthing or a connection problem, but it could also be a blockage. My car is no longer covered on warranty. I'm at 40k miles. there's a good chance that the cause of this distressing no-start condition is an electric fuel pump that's no longer capable of forcing fuel forward with sufficient. This is the enrichment cold start process. Dan Ferrell writes about do-it-yourself car maintenance and repair. But, before you go spending your hard-earned money on a new fuel pump, the pros at Airtex will walk you through a comprehensive troubleshooting process. The fuel pressure was at 28psi and it did not start. I tested the fuel pump, and it does work. If there is any rust in there, you must take care of that problem. If you listen closely, you should be able to hear the in-tank pump running for. So I put several gallons of gas in and then got this no-start issue. If the heat rises and the car stalls, this may be an indication that the motor of the fuel pump is having problems. The fuel pump relay helps your vehicle start the car by pressurizing the fuel system for the first few seconds before the oil pressure's level takes over. In the event of an accident, the fuel pump is turned off to prevent a fire. If the car is cranking (you hear the normal starting noise) but the engine will not fire then you have a no-start. That way, when the fuel pump sends the gasoline into the engine, those impurities won't be there. First, we are going to disconnect the power from the fuel pump and then crank the engine over to clear out some of the additional fuel that is in the engine, then we will reconnect the fuel pump and jump start the car to get it started. Voila, pump and engine start. As it happened, this was the perfect time to swap the pump. If no buzz is heard from inside the car or back by the fuel tank, the pump may be dead and fuel is not reaching the engine at all. nor do i have any fuel delivery. The fuel pump is not turning on. put the fuel cap back on and drive away. Often times this treatment represents the difference between a burned out power steering pump and a power steering pump that only needs to be topped up with oil. I just wanted to let you know that I recently replaced a faulty fuel pump in my '99 miata that was running, but not putting out enough pressure for the car to start. The bad news is I don’t know where it is on this car. ) Bummer to be hit by an uninsured motorist. A bad fuel pump, clogged fuel filter or a bad fuel pressure regulator can result in a low fuel pressure which will lead in that your car might not start. Listen for its whirring in the back when you turn on the key. The mass airflow sensor tells the car’s computer to add the proper amount of fuel based on the air coming through to the engine. They repair and lie about the fix every time, they do not and I repeat do not know how to fix the problem. So that confirms that the fuel pump ECU is doing its job. Additionally, disconnecting the fuel filter inlet line and energizing the fuel pump by turning the key on can indicate if fuel is being pumped to the fuel filter. I'm also wondering if a bad fuel bad can drain the power out of the car battery, since my battery had died. Check your manual, the dealer, or maybe someone here knows. I thought it might be helpful to let the readers know that if the pump runs they should still try a fuel pressure tester to make sure the pump is doing what it's supposed to. If a car stops and has not run out of petrol, check whether there is petrol in the carburettor. I have a 1998 Chevy Blazer, i changed my spark plugs, fuel pump, fuel filter and starter and my chevy blazer still wont start. Originally it was a bad fuel pump changed that then there was no pressure fixed that. To replace the fuel pump on a Mercedes-Benz, it costs between $450 and $800 depending on the MB model. Note that some fuel pumps only flow while the car is cranking so some cars don't have an audible buzz. Now car won't start. If it is this one try switching fuel tanks and just turn the key to run but don't start the engine. First, we are going to disconnect the power from the fuel pump and then crank the engine over to clear out some of the additional fuel that is in the engine, then we will reconnect the fuel pump and jump start the car to get it started. That the wiring between the fuel pump and the fuel pump relay is OK. If the car jerks or falters in the first mile before hitting top speed, this may indicate a fuel pump problem. I pulled the relay cover off and noticed that it is not functioning, so I replaced the relay and it still does nothing. You need to check for fuel, spark, airflow 1st. Try starting the engine afterward. nor do i have any fuel delivery. 8l, auto, and having same problems since a year. In checking our hard start vehicle, suppose the fuel pressure drops close to zero. If the fuel pump is faulty and needs replacing. my 97 c180 wont start when the fuel guage shows 1/4 of fuel put some more liters and the car is fine is there a problem in the fuel pump or is it the fuel tank please someone help. After the engine is running that relay turns off and the current for the fuel pump is supplied via the oil pressure sending unit If that relay fails then the car won't start until the oil pressure is up to three or four PSI. So we deemed the problem to be the fuel pump. If the vehicle in question is new to you and you have no history on it, there's no guarantee the motor will start. put up by admin at January, 22 2015. Mazda tech support was called and the they suggested changing the fuel canister. Driving my Ford Escort LX Wagon to the airport, hit a pot Hole and the fuel cut off light came on. Search Forums; Whining Noise - Fuel Pump 2014 Scrambler. i KNOW that the pump is original from 1984. On most vehicles, the fuel pump is located in the fuel tank. The engine used to power a Top Fuel drag racing car follows the basic layout found in the second generation Chrysler 426 Hemi "Elephant Engine" made from 1964-71. In any case, there isn't much you can do but call for help and be patient until it arrives. Car was towed and a garage said I needed to replace the fuel Pump. Replace fuel filter, and check fuel pump fuse. When this happens, the best thing you can do is to have your check valve replaced immediately. I have Toyota Corolla. This seemed to happen after the car ran completely outta gas. Symptoms of a Bad Electric Fuel Pump Nearly every modern fuel-injected car and truck requires a fuel sending unit. He says to hit the tank with a hammer while someone tries to start the car. Checked the fuel pump relay circuit and found no " low side power" to the relay to activate the high side power to the fuel pump. Quick checks: Battery voltage/health; Connections (terminals AND grounds) Fuel pump & pressure (runs when key moved to ON) Theft light (PATS). High-speed tests of the Eurofighter-powered land speed record car have begun. The pump may be mechanical worked by the engine - or it may be electric, in which case it is usually next to or even inside the fuel tank. Search Forums; Whining Noise - Fuel Pump 2014 Scrambler. What Happens if You Drive Away With the Nozzle. Running out of gas is inconvenient and embarrassing, but at least your car will be easy to start again if you have fuel injection. When you purchase a GMB fuel pump, we offer free technical support both online and by phone. A sputtering engine is a clear sign that your pump may need to be replaced. Possibly fuel pump. Turned out to be a loose ground wire on the fuel pump (or so I was told). But can't seem to find out what is causing it to not start??. Petrol consumption in HCMC is forecast to reach 2. The low pressure may also manifest as an inability to start the car. Blown fuel pump relay (Relay is energized by PCM to route power to fuel pump when ignition is on). but once i got it started it kept enough pressure to. If the fuel pump does not make a sound, replacing the pump may be necessary. It eventually stopped. In fact, within days of picking up the car, I encountered random no-start conditions. The fuel pump is tasked with carrying the fuel from the gas tank of the vehicle to the engine, where it’s used to power the entire vehicle. The fuel injectors work at any RPM, so a choke is not necessary. There are two types of common fuel pump: In-tank, or submersible fuel pumps, and external fuel pumps. The 2 terminals are the nearest left and middle right pins on the relay board). Yes and yes. You've built a mechanical fuel-injection pump, from the days before digital engines. If you read the first ’57 Chevy article about the heater core, you already know that the fuel pump in that car needed attention too. Replaced fuel pump relay with new one still acts same. So we deemed the problem to be the fuel pump. Porsche 928: Why Won't My Car Start? Whether your car cranks continuously, or will not crank at all, this article provides a step-by-step procedure to determine what is keeping your 928 from starting. Why would hitting where the fuel pump is make my car start for a short time. Always monitor your fuel levels to prevent this problem from arising. The fuel pump relies on the gasoline in the tank to keep it cool and lubricated. 8l, auto, and having same problems since a year. Here are the most common signs and reasons. (i) Fuel Pump Check Valve. The 20 amp fuse for the fuel pump relay did not fail. It's to keep pressure off the fuel lines and to reduce the risk of a fuel leak or fire. It sounds like the engine may be starting rich. When I turn the engine off, the fuel pressure will bleed down to near zero in 4 to 5 min. If old fuel was left in the lawn mower, drain the old fuel from the fuel tank and replace the fuel filter. Could also be a fuel injector which is major expense if the fuel line isn't the culprit. As you start your car's engine, the fuel pump is one of the first mechanisms in your vehicle that start to move. Without the spark plug, your car might crank but it would not start. Replace fuel filter, and check fuel pump fuse. On fairly cold engine - do not press on gas at all. hi, had a new fuel pump installed a couple weeks ago in a vx. previous top speed achieved at Newquay in 2017 – before hitting 334 mph in Run Profile 3. Fuel pump: Even if the tank is full, a weak or failed fuel pump relay may prevent the fuel from reaching the engine. I have a 2014 Sorento and now that the temperature has dropped below zero the car will not start first thing in the morning jump in hit the brake pedal push to start button lights come on and nothing no sound try it again brakes are solid no go on the third try so then start once driving no problem restarting throughout the day as long as we're above 30 degrees no problems last year. In worse cases, it would not start at all. The fuel pump only runs for a few seconds when you turn the key on or when cranking the engine. Porsche 928: Why Won't My Car Start? Whether your car cranks continuously, or will not crank at all, this article provides a step-by-step procedure to determine what is keeping your 928 from starting. If your car won't start, hit the bottom of the fuel tank several times with the heel of your shoe to jar the fuel pump motor. The vast majority of vehicles will have either an automatic or. my theory: the fuel pump check valve is bad. On cold starts with my 335i sedan, car would take 5-6 seconds to start. The O2 sensors will sense this and try to correct, but the stock tune can only correct so far. Officially, you are supposed to replace the fuel lines once removed, but some people choose not to. Always monitor your fuel levels to prevent this problem from arising. Usually, when you start your car the fuel pump gives off a slight buzzing sound signaling that it has started working. Or does it work some other way. If it's firing listen for the fuel pump to kick on and make a humming noise for about 1-2 seconds when you turn the key to the on position before trying to start the car. TDV6 High Pressure Fuel Pump I've been having intermittent fuel-related problems for the last 4000-odd kms. Fuel pump assembly replacement. The resistance created causes lower than normal voltage to the pump, resulting in inadequate fuel pressure to start and run the engine. When it dies I can start it right back up and drive for a little while. Parked the car after driving it 60 miles and it would not start. I have a Buick Allure 2005 will not start. The fuel filter works by cleaning out impurities in the gasoline. Car won't start after making multiple short stops great sometimes it didnt and would not start as the fuel pump would not turn on. Fuel pump drive alignment. If any one of these isn't there, you aren't going anywhere. NO check engine lights. How do I know if I have a fuel pump problem with my car. it used to start straight away before, on the first spin over of the engine. it sounds like its coming from the glove box area but when I try to start my car my CEL ( Check Engine Light) comes on and stays lit for more then 2 seconds and the light won't. hi, had a new fuel pump installed a couple weeks ago in a vx. Mechanically fuel-injected cars from the ‘50s, ‘60s, and ‘70s add an injection pump or a fuel distributor, injectors, a high-pressure fuel. A recall included about 41,000 vehicle, but it did not include his vehicle. Push starting , also known as bump starting , clutch starting , popping the clutch or crash starting , is a method of starting a motor vehicle with an internal combustion engine by engaging the manual. I never did get around to replacing my ISC or TPS but idc anymore. The good news is you just have to press a button on the switch to reset it. There aren't many things that will make a car not run. This happened on the 2000 Intrigue I've got, and the fuel pressure regulator is known to be a problem on these cars. The fuel pump is tasked with carrying the fuel from the gas tank of the vehicle to the engine, where it's used to power the entire vehicle. If I leave the car turned off for even 15 or 20 minutes, I have to let the fuel pump run before cranking the engine or it won't start. If the car will not start and it is very cold outside, you may need to "pump the gas" or add additional fuel to the engine to make it easier to start. ) But after I replaced the fuel pump and checked that it was pumping fuel I tried to start the car and it gave the same response. If I squirt a little starting fluid into throttle body it would start up and run-until it burns off. Almost like it's not getting gas or something. Driving my Ford Escort LX Wagon to the airport, hit a pot Hole and the fuel cut off light came on. I then traced the wire leading to the fuel pump and applied power from the battery and the fuel pump kicked in so this confirmed that the fuel pump stil works. One of the clearest indicators of a fuel pump problem is found while driving at a consistently high speed. of a new fuel pump. Fuel pump of the highest quality from ERA for SKODA Order Fuel supply module from ERA for Skoda easily and safely Find your car and start searching for the right. I had an accident with my 1. Refer to the appropriate model year Workshop Manual for removal procedure. Higher line pressure is necessary to start flow against g-force and to push fuel through the restrictive regulator valve. hi, had a new fuel pump installed a couple weeks ago in a vx. My car has been acting like it does not want to start. If the problem is the fuel pump check valve, the engine's difficulty to start is due to its lack of receipt of gasoline. In order for an engine to start and run cold, it requires more fuel than when it is hot. Car Will Not Start problem of the 2016 Ford Fusion 13. I then traced the wire leading to the fuel pump and applied power from the battery and the fuel pump kicked in so this confirmed that the fuel pump stil works. Fuel pump of the highest quality from ERA for SKODA Order Fuel supply module from ERA for Skoda easily and safely Find your car and start searching for the right. Loss Of Power, Car Dies. my theory: the fuel pump check valve is bad. I manually open the relay and the fuel pump kicks in, tried to start the car while I held the fuel pump relay open (Fuel pump working). If it's blown check for a short to ground on the fuel pump voltage supply circuit. You should also look under the car to inspect your fuel lines. They repair and lie about the fix every time, they do not and I repeat do not know how to fix the problem. Since the fuel pump is in the gas tank, your pump picked up debris, and dirt on the bottom of the tank and ran it into your fuel filter. Allowing your fuel tank to run dry can age your fuel pump very fast. Use a small gas can and a hose and hook it up to the fuel pump on the engine. When putting in an aftermarket fuel pump or looking to get more fuel out of your factory pump, one mod worth doing is re-wiring that fuel pump. It would not start, and all lead to the fuel pump. I thought it might be helpful to let the readers know that if the pump runs they should still try a fuel pressure tester to make sure the pump is doing what it's supposed to. In fact, within days of picking up the car, I encountered random no-start conditions. If hitting the fuel tank makes the car start briefly, then the cause of the problem you are experiencing is a faulty fuel pump. If the lines get clogged, the vehicle can accelerate slowly or hesitate and stall. After replacing the pump the car will not start. This usually happens if I start the car the next day, say in the morning when I need to go out. Install pump and. Gas pump nozzle color mix-ups can hit your wallet assumes a green nozzle at an unfamiliar station indicates the pump dispenses diesel fuel. If your fuel pump has failed completely, you will experience a no-start condition where your engine still cranks (turns over) but fails to actually start due to lack of fuel. A fuel pump replacement should also be accompanied by a fuel filter replacement and a check of the pump's connectors (on both sides of the plugs) to ensure they are not burnt or overworked. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. Sometimes car only starts when I hit the gas on start up and by hitting the gas pedal (misnomer on fuel injected cars as all you are controlling is the throttle. Ive since installed a walbro 255, 1050cc injectors and a AFPR and i still have to pump the gas to start my car. The fuel injectors work at any RPM, so a choke is not necessary. This is the pump on SRH19461, my 1974 Silver Shadow. We need additional tests to isolate the actual cause. Unlike old carbureted vehicles, fuel injected cars almost always use an electric in-tank fuel pump that simplifies the restart procedure. Pumping the gas in the causes the carburetor to release a small amount of fuel into the engine. But can't seem to find out what is causing it to not start??. If it continues to stall out, this is a clear sign that the fuel pump may be starting to deteriorate and needs to be replaced. Unfortunately, it’s not always the easiest part to replace. He has certifications in automation and control technology. You will pay about $300-$450 for parts (fuel pump) at the dealer. codes will give you a possible idea… but a o2 sensor and p0401 won’t make a. When you start the car, you will notice that it idles high for a period of time until the engine warms up. With both of my cars they had sat for a dozen or more years with fuel in the tank. If the car will not start and it is very cold outside, you may need to "pump the gas" or add additional fuel to the engine to make it easier to start. it sounds like its coming from the glove box area but when I try to start my car my CEL ( Check Engine Light) comes on and stays lit for more then 2 seconds and the light won't. The fuel pump will hum for two to three seconds if the pump is working. No Start Test 1: Checking for Spark. In the event of. On most vehicles, the electric fuel pump is located in the fuel tank. Car was towed and a garage said I needed to replace the fuel Pump. When the car's fuel tank is at a certain angle, the fuel pump doesn't pump fuel properly, messing up the whole combustion, and causing the car to stall. The first thing to check is the fuel pump. I'm at 40k miles. This explanation fit the situation I was in perfectly, as the fuel indicator had just come on when it occurred. The vehicle was towed to the dealership where the fuel pump clip was replaced. I used to do this with the dicky starter on my old HQ Monaro. filled the car up after leaving the shop and since then the car takes 3 times as long to start then it did before. Learn how to start a car in very cold weather. RAY: But I say tough! It's possible for the fuel pump to start making noise before it's gotten bad enough to affect the fuel pressure, and therefore the performance of the car. Could of course be a number of things causing the problem, one thought is fuel pump gave out. Here's how to replace the fuel pump in a gas tank for cars with a carburetor engine. Almost like it's not getting gas or something. The fuel must travel through a hose, also called the fuel line, and it is the job of the fuel pump to make sure the gas reaches the. The Fuel Pump for 1999 to 2003 Chevrolet and GMC Pickup Trucks takes the form of an electric pump mounted in the fuel tank, which you might be able to hear as a quiet whirring sound when the key is first turned. my brother brought my car in and they say that it is probably the fuel pump. Where is the fuel pump emergency shut off? - Answered by a verified Auto Mechanic. If your car can't pump the gas to fuel the engine, it won't start. If it's blown check for a short to ground on the fuel pump voltage supply circuit. I think I can hear the fuel pump making noise inside the tank. Mounting the electric pump in an enclosed area: Not only do you need to keep the fuel line away from heat sources, but you also have to keep the electric fuel pump out of enclosed areas, such as the trunk or interior of your car. It's to keep pressure off the fuel lines and to reduce the risk of a fuel leak or fire. AND ITS NOT THE FUEL PUMP. hello, have a 1999 es300 thats getting no power to the fuel pump, Ive checked the efi fuse and cir opn relay and iv also checked the pump with 12v directly to it and it fires right up, that leaves me thinking theres something wrong with the fuel pump ecu, if this is correct exactly where is it lo. My husband states: to check the simple things first as a process of elimination to causes. The job of the fuel filter is to screen the gasoline for any impurities which may exist in it. It's not the fuel pump. The OEM fuel pump is a durable unit that is known to last for a long time. Many engines (older motorcycle engines in particular) do not require any fuel pump at all, requiring only gravity to feed fuel from the fuel tank or under high pressure to the fuel injection system. That usually means you need a jump start. On these cars, "pump the gas" a few times by pressing the accelerator pedal before starting. Have it towed in to one place, couldn't find whats wrong, than had it towed to dealer. Low pressure can mean a failed fuel pump or failed pressure regulator and high fuel pressure can mean a bad regulator or a kinked line. Running your vehicle with less than a 1/4 tank of gas is hard on the pump, because the fuel pump uses gas to cool it. Every truly crappy day begins with a car that won't start. If the vehicle doesn't start or starts and dies due to low fuel pressure, check the fuel pump fuse. Yes and yes. Installed easily and and the generator fired up within three seconds of hitting the start button. Most fuel injected auto engines have a pump in the fuel tank that pressurizes the fuel lines. When putting in an aftermarket fuel pump or looking to get more fuel out of your factory pump, one mod worth doing is re-wiring that fuel pump. 25 ccm Ford Fiesta 2006 and after a crash - the car would not start. While the cause could be a range of issues related to fuel, compression, or spark, the fuel pump is often a likely culprit. The electric fuel pump is hanging up on him and he needs to replace the pump soon. Turn on ignition, turn on switch to electric fuel pump for about a minute, start car, turn off electric fuel pump switch and go. Welcome to Tanks, Inc. STILL NO FUEL. Additionally, disconnecting the fuel filter inlet line and energizing the fuel pump by turning the key on can indicate if fuel is being pumped to the fuel filter. When we are running a performance car at the limits, having a fuel pump start to lose voltage, and therefore lose flow, can cause catastrophic problems. Engine won't start or is hard to start. I first thought the Carter P60430 was the answer, but it puts out what might be excessive pressure at 6 psi, per Summit. the car was running great for about a week and a half. Was told different locations for the fuel kill switch and can't locate. Replaced fuel pump yesterday, now I have no start at all. nor do i have any fuel delivery. First test for the fuel pump is to have someone go near the back of the car and have someone turn they key to run. A visual inspection of the relay shows an internal burn mark between pins 85 & 86. now it's like 3 or 4 spins before it fires up. The Clutha helicopter crash was caused by the pilot's failure to ensure at least one of the fuel transfer pump switches was activated, a fatal accident inquiry has found. Trouble shooting the fuel pump starts with the relay. The fuel pump check valve normally functions as a device that maintains adequate gasoline in the engine by denying the gasoline's drainage back to the gas tank when the vehicle is not in use for. [Symptom: Car won't start] I hooked up a fuel pressure gauge and found that no more than 10 psi was generated while running the fuel pump continuously, and the trickle sound got worse. of a new fuel pump. Use a small gas can and a hose and hook it up to the fuel pump on the engine. Place a small amount of oil onto the two fuel line seals. Trouble shooting the fuel pump starts with the relay. A faulty or bad fuel pump could be the culprit. Otherwise, the fuel pressure would not have gone up to specification (35 to 45 PSI). There was a clicking in dash above cluster that occurred with key on. The Clutha helicopter crash was caused by the pilot's failure to ensure at least one of the fuel transfer pump switches was activated, a fatal accident inquiry has found. It eventually stopped. Low fuel pressure can cause hard starting, a rough idle, misfiring, hesitation and stalling. The general rule is you do not need to press on the gas when starting a car with a fuel injected car, the startup routine set by the ECU is to first prime the pump and fuel lines and then as you turn the key (or press the start button) the starter. That said, whats the best way to prime the fuel system with my (new) mechanical pump?. If the problem is the fuel pump check valve, the engine's difficulty to start is due to its lack of receipt of gasoline. On a vintage carbureted car, the fuel delivery system is simple, consisting of just a fuel tank, rubber and metal fuel send lines, a low-pressure fuel pump, a fuel filter, and one or more carburetors. The general rule is you do not need to press on the gas when starting a car with a fuel injected car, the startup routine set by the ECU is to first prime the pump and fuel lines and then as you turn the key (or press the start button) the starter. When you have a car hard to start cold, hot, or both, trying to find the fault can be frustrating. Both of these complaints are generally caused by a problem with cold start enrichment. Nothing on the diagnostics. Higher line pressure is necessary to start flow against g-force and to push fuel through the restrictive regulator valve. Remove the fuse for the fuel pump or the relay. Lights come on and fuel pump runs but car won’t start not sure what to do or what the problem will be GetHuman3108509 did not yet indicate what BMW should do to make this right. pull a spark plug and see if your getting spark. You need to check for fuel, spark, airflow 1st. Think of it as a clockwork if-then statement: The "if" is engine condition, physically communicated to the pump. Hey, I've got a 94 XG Ute and I as a I was driving the other day the engine just cut out, tried starting it and it will fire (its getting spark) but not getting any fuel to the rail, also couldn't hear the fuel pump priming so assumed the pump had gone, replaced the pump today but she still wont start, anyone got any ideas?. Measured voltage at the fuel pump's connector & saw voltage switched to 12V but only for ~ 3 sec when the key is turned to the ON position. Many vehicles, including. Broke down on road twice 3rd time drove last two miles home at 20 mph. Note that you may still hear the engine making noise when you try to start your vehicle even if the relay does not work. Rather than push the car inside, why not construct an external fuel tank and pump system for fixing the car in the field? This video will show you how to do it. The pump makes a whirring sound when the key is turned to the on position in the ignition. The first question you need to answer is what type of fuel pump your car has. The CPFI system requires a minimum of 61 PSIG to operate the injector poppets, although I've seen some barely start and run as low as 58 PSIG under just the right circumstances. I replaced the fuel pump myself and it now turns on when the key is on the ON position and the fuel lines are pumping fuel. good luck. I tested the fuel pump, and it does work. The quality of fuel at various gas stations can differ. If this is the case or you are starting up an engine out of the car, you need to rig up a little fuel system of your own. However, when you start modifying your car or have high miles, you will have to replace your fuel pump. The fuel pump relay is usually located in. I had the car towed back to the dealer on a couple of occasions. Originally it was a bad fuel pump changed that then there was no pressure fixed that. The fuel pump is tasked with carrying the fuel from the gas tank of the vehicle to the engine, where it's used to power the entire vehicle. my brother brought my car in and they say that it is probably the fuel pump.