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Hi, i'm having the same problem of my Bt-50 3.0crdi not starting losing pressure on fuel rail and i took off the pressure valve on the pump test it is giving me 0 resistance......? Pls help

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  • Cars & Trucks Expert
  • 138 Answers

Replace fuel pump and fuel pressure regulator as well as fuel filter

Posted on Nov 21, 2014

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6ya6ya
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Posted on Jan 02, 2017

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  • 99 Answers

SOURCE: 1999 chevy blazer fuel problem

probably not fuel filter . probably going to have to remove the upper intake and replace the fuel injector spider(fuel inj assebly) if it is droping fuel pressure it is leaking into the upper manifold

Posted on Nov 30, 2008

66 chrgr
  • 1011 Answers

SOURCE: No Fuel Pressure at fuel rail

replace the fuel pump

Posted on Jan 24, 2009

Metal Unlord
  • 10 Answers

SOURCE: 99 Taurus wont start. spray gas into the intake and it will start

Check fuel filter.

Posted on Mar 08, 2009

  • 3 Answers

SOURCE: will start then dies

On the regals they have a ceramic resistor on the passanger side under the fender. It heats up and over time it tends to brake and the wire inside tends to rust away. The fuel pumps run in 2 different speeds. Had the same problem. Dealer only part yet the car would run and you would think it was the fuel pump. Turn the key it kicks on then start and dies out. Ceramic on the pass side would need replaced. It is white about 2-3 inches long or so held on with 2 bolts i do believe. Ill find a bulliten i found online to help me diagnos the problem. :) hopefully this helps someone out instead of spendin $$$ that ya cant afford with the recession eh?

Posted on Apr 01, 2009

  • 73 Answers

SOURCE: wont start no fuel pressure

this vehicle needs 60 lbs of fuel pressure to make the popit type fuel injectors to open you need to check with pressure gauge

Posted on Apr 15, 2009

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I have a 97 grand cherokee larado and when I shut it off it won't start back up for a few mins..then it fires up...is there a kill switch on it or something else wrong possibly


No kill switch. You may have a fuel pump pressure issue, it may being losing pressure after shut down due to a faulty fuel pump check valve. Do a fuel pressure leakdown test, start the engine with a fuel pressure test gage hooked to the test port on the fuel supply rail to the fuel injectors, looks like a tire valve. Start the engine and run it and check for leaks at the pressure port to the test gage, repair as needed, once you are sure the test gage is leak free shut the engine down, if the fuel pressure bleeds down very quickly then you need to replace the fuel pump.

Apr 12, 2017 | 1997 Jeep Grand Cherokee

1 Answer

1987 Nissan Maxima Hurd to cold start


Verify that the fuel pump is not losing pressure after you shut the engine down, hook up a fuel pressure test gage to the fuel pressure test port in the fuel rail on the top of engine and start the engine, then turn the engine off, the fuel pressure should not drop more than 5 PSI, if it does you need to replace the fuel pump.

Nov 24, 2016 | Nissan Cars & Trucks

1 Answer

Hi i a 20tdci that wont start but will start with sniff


It sounds like you have a defective fuel pump. Use a pressure gage and check the fuel pressure at the fuel supply rail to the fuel injectors, There is what looks like a tire fill valve on the rail, that is the test port.

Jul 15, 2016 | Cars & Trucks

1 Answer

I turn ignition to ready position. The fuel pump engages and prime's the line. I then start the engine. Engine starts and runs for a max of 15 seconds. As soon as the engine cuts out the fuel pump...


The crank sensor is a good candidate. Pretty common failure on jeeps.
To clarify, the fuel pump is on all time during engine cranking, and during engine running. When the engine cuts off, the pump will also be stopped. But, you will not lose pressure in the fuel lines and fuel rail immediately. The check valve in the pump is supposed to hold fuel pressure in the system for a good time-about 20 minutes. The pressure should bleed off very slowly.

Your fuel pump and fuel system is probably good, but if you really lose prime (or pressure) that quickly, then there is a problem. Best way to check is with a fuel pressure gauge after the engine cuts out. Or, if you have the test port schraeder valve on the fuel rail (looks like a tire valve), you can use a screwdriver to press the center of the valve. If gas squirts out, you do have fuel pressure, prime is not lost, fuel system is good, and you can assume problem is in the ignition circuit, not a fuel problem. Probably the crank position sensor.
Good luck, Casey.

Oct 24, 2013 | 1989 Jeep Comanche

1 Answer

My ford fiesta van needs hand priming after 4 hours so van can start - why is this?


Could be bad diaphragm in fuel pressure regulator, leak in gas line or a check valve somewhere. Your problem continues to the fuel pump because the pump should quickly restore pressure in seconds and it is not doing it.

So both problems can be due to 1 part, but it can be 2 separate problems, losing pressure and then failing to restore pressure.

A fuel pressure gauge can be attached to the test port on the fuel rail. The term used is "bleed down" test. It can help diagnose what is going on.

Sep 30, 2013 | Ford Fiesta Cars & Trucks

3 Answers

WHY DO I HAVE TO POUR WATER ON MY FUEL RAIL AFTER IT IS HOT SO THE ENGINE WILL START


Hi James,

That is a real good question. Have you checked the fuel pressure on the fuel rail to see how much pressure there is when it refuses to start? It sounds like you may be losing your fuel pressure because of the fuel returning to the tank when the engine is hot. This could be due to a faulty fuel pump assembly or a faulty fuel pressure regulator.

Try this: When it doesn't start, turn the key OFF and wait about 15 seconds, then turn it back to the ON position (do not try to start yet). Repeat this a second time, only this time turn the switch to the START position. If the engine starts, then it is definitle due to loss of fuel pressure in the fuel rail. You will then need to test your fuel pressure with a gauge and plug off the return line to determine if the problem is being caused by the regulator or the pump.

Oct 16, 2011 | 1995 Pontiac Grand Am

2 Answers

It seems like fuel problems. i got fuel coming to the top and its good pressure..engine start for about 4 or 5 sec and die ???helpcould it be the regulator?I have installed new filter....help


The real test is to use a fuel pressure tester. It sounds like the fuel pump is making the initial prime but failing to build pressure. This could be a bad fuel pump or it possible that you have a bad fuel pump relay.
I would test the fuel pressure on the fuel rail first, if you have consistant pressure generally above 25PSI, (check MFG. spec..) then I would consider checking the regulator. If you lose pressure just after the start up then try replacing or swapping the fuel relay and see if this corrects it. If not then chances are your going to have to replace the pump.

Jul 30, 2010 | 1999 Chevrolet Suburban

1 Answer

2001 Chevy 2500HD 6.0L, Hard starting.


Check the fuel pressure, bad fuel pump or sock on the fuel pump and fuel filter check spark plugs and check distributor cap, a fuel pump is $273.00 or a bad injector $110.99 or BWD Fuel Vapor Pressure Sensor for $35.99 any of these parts could cause the problem, so without doing a fuel pressure test it is a guess, if the vapor switch is bad it could cause a long crank time if the fuel pump is bad it has a check valve in the fuel pump, if the check valve goes bad the pump can't maintain fuel pressure so on start up the fuel has to pump from the tank all the way up to the fuel rail, if the injectors is bad it could leak after engine shut down and cause you to lose fuel rail pressure. Also the fuel vapor sensor could be stuck open and could cause the problem, all need to be tested, you can rent the fuel pressure tester from AutoZone or advance auto or Shucks they return your money when you bring the tool back as long as you buy the parts to repair it from them. That would be the first thing I would check fuel pump pressure and if you replace the pump then change the fuel sock as well. That model was not meant to burn ethanol and can kill the fuel sock the fuel pump and filter.

Jul 04, 2009 | 2005 Chevrolet Silverado 1500HD

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