Question about 1989 Ford F 250

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Fuel pressure problem

When trying to start the fuel pump will run for minutes at a time, engine will not start until pump reaches prime, no fuel pressure in the fuel rail.Dual tanks , does this with either tank?

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  • Expert
  • 39 Answers

Get fuel pressure tester to see if you don't have enough to start car. could be fuel line leak

Posted on Feb 09, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

dennymulford
  • 1055 Answers

SOURCE: 1990 ford f150 dual tanks have to wait 5 minutes

fuel fiter or fuel pressure regulator is bad !!!

Posted on Apr 27, 2009

  • 95 Answers

SOURCE: 1987 f-150 dual tanks fuel problem

You are right. There are three pumps. It sounds like the transfer pump in the front tank is bad. The in tank pumps just supply the high pressure pump to keep it primed. You need the front pump.

Posted on Sep 21, 2009

  • 1 Answer

SOURCE: 1992 f-150 dual gas tanks tank closest to cab of truck pumps gas out the fuel cap

A FORD EQUIPED WITH DUAL TANKS THIS YEAR MODEL HAS CHECK VALVES IN THE FUEL PUMPS .THE FUEL RUNS FROM THE REAR TANK WHEN IT IS POWERED ON TO A TEE AND INTO THE SAME LINE AS THE FRONT PUMP . THE PROBLEM IS AT THE BOTTOM OF THE FRONT FUEL PUMP THERE IS A CHECK VALVE ON THE FOOT AND IT IS NOT WORKING.WHILE THE TRUCK IS RUNNING WITH THE REAR FUEL PUMP ON IT IS PUMPING FUEL INTO THE FRONT TANK . IT WILL RUN OUT OF THE NECK WHEN IT IS FULL.THE FIX IS SIMPLE REPLACE THE FRONT FUEL PUMP. THEY DONT MAKE A CHECK VALVE REPLACEMENT I CHECKED I HAD THE SAME PROBLEM AS YOU.

Posted on Oct 13, 2009

  • 6 Answers

SOURCE: 1997 F250 with dual fuel

If fuel injected. the tank selector valve switches both the suction line from the tank and the return line back to the tank. It sounds like you have a stuck or bad tank selector valve if the return is not being ported back to the rear tank.

Posted on Apr 22, 2011

pchambley
  • 334 Answers

SOURCE: 2004 ford taurus ses 3.0

The fuel pressure regulator is on the fuel rail..But it sounds like to me like a stuck idle air control or a vacuum leak..Look carefully at all the vacuum lines and make sure they are not broke or crimped..If it stuck idling high you can tap on the valve and the idle will come down

Posted on Sep 05, 2011

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1 Answer

How do you bleed a diesel pump jeep Cherokee turbo diesel 3.1 5 cylinder 2001


we dont have this engine here, USA.
but i have the WG jeep book,
starting page 12 , chapter 14


FUEL INJECTION PUMP BLEEDING
(1) If the fuel injection pump has been replaced,
air should be bled at the overflow valve before
attempting to start engine.
(a) Loosen the overflow valve (Fig. 18) at the
rear of the injection pump.
(b) Place a towel below the valve.
WARNING: WHEN CRANKING THE ENGINE TO
BLEED AIR FROM THE INJECTION PUMP, THE
ENGINE MAY START. PLACE THE TRANSMISSION
IN NEUTRAL OR PARK AND SET PARKING BRAKE
BEFORE ENGAGING THE STARTER MOTOR.
CAUTION: Do not engage the starter motor for
more than 30 seconds at a time. Allow 2 minutes
between cranking intervals.
(2) Crank the engine for 30 seconds at a time to
allow air trapped in the injection pump to vent out
the fuel injector drain tubes. Continue this procedure
until the engine starts. Observe the previous WARNING
and CAUTION.
(3) Tighten overflow valve.
HIGH-PRESSURE FUEL LINE BLEEDING
WARNING: THE INJECTION PUMP SUPPLIES HIGH-
-PRESSURE FUEL OF APPROXIMATELY 45,000 KPA
(6,526 PSI) TO EACH INDIVIDUAL INJECTOR
THROUGH THE HIGH-PRESSURE LINES. FUEL
UNDER THIS AMOUNT OF PRESSURE CAN PENETRATE
THE SKIN AND CAUSE PERSONAL INJURY.
WEAR SAFETY GOGGLES AND ADEQUATE PROTECTIVE
CLOTHING AND AVOID CONTACT WITH
FUEL SPRAY WHEN BLEEDING HIGH-PRESSURE
FUEL LINES.
WARNING: DO NOT BLEED AIR FROM THE FUEL
SYSTEM OF A HOT ENGINE. DO NOT ALLOW FUEL
TO SPRAY ONTO THE EXHAUST MANIFOLD WHEN
BLEEDING AIR FROM THE FUEL SYSTEM.
Bleed air from one injector at time.
(1) Loosen the high-pressure fuel line fitting at
the injector (Fig. 19).
(2) Crank the engine until all air has been bled
from the line. Do not operate the starter motor
for longer than 30 seconds. Wait 2 minutes
between cranking intervals.
(3) Start the engine and bleed one injector at a
time until the engine runs smoothly.

end quote.
pump timing is on next page
or tank filter line priming before. above.

Mar 22, 2016 | Jeep Cars & Trucks

2 Answers

When i turn the key the engine cranks over but does not start, if i continue to crank it for a minute or two then it will eventually start and drive just fine. any ideas?


This sounds like a fuel system priming issue. When you first turn the key to the ON position (not cranking yet), you should hear a three-to-five second buzzing noise. This is the fuel pump running to pressurize the fuel system for cranking. This is controlled by the PCM and is relay activated. Once the vehicle starts and oil pressure rises, then the fuel pump is activated by the PCM via a different relay. If you can't start at first, what is probably happening is that the prime is not occurring and you have to crank it until the PCM sees oil pressure and then fires off the fuel pump. It could be PCM wiring or a bad fuel pump prime relay.

Oct 02, 2015 | Cars & Trucks

1 Answer

2005 chevy silverado 1500. Just on first start or if sits for a few hours engine will bog down. When using auto start takes a few tries


Possible fuel pump issue causing fuel to drain back into the tank. Check valve inside pump may be bad. Once vehicle is turned on it may take a few seconds to prime up the fuel lines until operating pressure is reached. Put a pressure guage on the fuel rail and start the vehicle. Should be approx 55-60lbs running. Turn off vehicle and leave it sit with guage attached and monitor for pressure dropping off to 0. If so, suspect a bad pump

May 03, 2015 | 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

Diesel fuel system


Hello there , sounds like your fuel pressure is low , your fuel sensor may be faulty or your fuel pump is sucking air from between the pump a fuel tank .. Regards Graham ...

Apr 25, 2013 | 2006 Toyota Hilux 2.5

1 Answer

Takes a long time for fuel pump to prime before car will crank. sometimes 15+ minutes


Something is definitely wrong with this picture. It should only take 2 or 3 seconds for the pump to make correct pressure. Just turning the key to on turns the pump on to pressurize the system, then pump will shut off, maintaining pressure, until the computer gets an engine cranking signal, at which time pump should come back on, and stay running when engine is running.
The only way to check fuel pressure is with a fuel pressure gauge hooked onto the fuel rail. If you check and pressure is correct and doesn't drop right away, the problem is elsewhere, not in the fuel delivery. You said takes a long time before car will crank-is there a problem with the engine cranking over with key in start? That would be an ignition or starting circuit problem, not having anything to do with the fuel pressure.

Apr 10, 2013 | 1997 Ford Thunderbird LX

3 Answers

I have no power to the fuel pump on my 1996 TBird. Where is the fuse for the fuel pump located.


Do this test first. With the drivers door opened in a nice quite area turn the ignition key to the ON position without starting the engine. You should hear the fuel pump operating for 5 seconds which is priming fuel to the engine. If not heard the engines oil pressure sensor is at fault. The third wire from this sensor links to the fuel pump to prime. When the engine reaches normal operation oil pressure range the computer shuts off that circuit and turns on the fuel pump relay for the pump to run. That relay stays on until you shut the engine off

Jun 19, 2010 | 1996 Ford Thunderbird LX

1 Answer

Parked the van and went out to start it and it just cranked and stoped just for a sec. then would not start I useuly hear the fuel pump running but I can not here it now I have check the fuse box and found...


The fuel pump works off the engines oil pressure switch upon first starting the engine. That switch makes the fuel pump prime for the 5 seconds as well
When the engine reaches the normal oil pressure the computer shuts that circuit off and turns the fuel pu,p relay circuit on to have the fuel pump to run until you shut off the engine

May 29, 2010 | 1999 Chevrolet Astro

1 Answer

97 GMC Safari. It is taking a long time to start. cranks and cranks... about the 3rd or 4th attempt, it will start. This problem just happenend.. One minute it started on the turn of the key... then, this...


Replace the FUEL PUMP RELAY. Its located in the under hood relay center. This relay primes the pump with the key on, about 2 seconds, then the pump will not run until the engine has oil pressure, then the fuel pump is energized.

May 14, 2010 | 1997 GMC Safari

2 Answers

Have a 98 gmc 5.7 truck have to prime to start truck.


Sounds to me like either your pressure regulator is bad or you have a loose fitting somewhere in the fuel line from the fuel pump to the engine. When you turn your key to the on position, you should hear the whine of the fuel pump until it builds pressure. When you shut the truck off the pressure regulator should retain the pressure for a certain amount of time but if it don't close then air is allowed into the fuel line and the fuel drains down to fuel line away from the engine. Next time you try and start the truck after it has sat for a while try turning the key on until you hear the fuel pump whine shut off, then repeat it 3-5 times and then try to start it. Basically that is running the pump enough to get the fuel back up to the injectors. Check for loose fittings in the fuel line, or cracks in the fuel line and if all that is fine then replace the regulator.

Hope that helps

Oct 03, 2009 | GMC K1500 Cars & Trucks

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