2000 Ford F-250 FUEL PUMP?

Tiny
LUESONE
  • MEMBER
  • 2000 FORD F-250
  • V12
  • 4WD
  • AUTOMATIC
  • 56,000 MILES
Im having trouble with the fuel system.F250 6.8L truck sometimes starts sometimes doesnt, I replaced the fuel filter and had no problems for a few days. Started doing it again a simple tap of the fuel filter and the truck would start right up. I replaced the fuel filter one more time and now the truck just cranks but does not turn over. The couple of times that it did turn over, it was just for a few seconds and really rough. Can you guide me in the right direction?
Thursday, October 16th, 2008 AT 9:00 PM

3 Replies

Tiny
KERENSELF
  • MEMBER
  • 54 POSTS
Hi there!

You did not say anything about your check/service engine light being on. - If it is, DEFINITELY have the codes read before you do anything else. That way you have a good starting point to diagnose the problem.

If the light isn't on:
I would start first by verifying that it is a fuel supply problem and not spark timing/delivery. You can purchase an inexpensive tool at the parts store that goes into the end of your spark plug wires and clamps to a ground. We are looking for a bright blue spark. If it is present, I would next check fuel pressure. A service manual, like Haynes or Chiltons, will give you pressure specs and how to test. If pressure is too low, you are likely looking at a fuel pump or pressure regulator issue.
Reply back if you find codes and we can go from there.

Thanks!
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Thursday, October 16th, 2008 AT 9:20 PM
Tiny
LUESONE
  • MEMBER
  • 4 POSTS
I HAVE NOW REPLACED THE FUEL PUMP. THE TRUCK STARTED RIGHT UP IDELED FOR A FEW MINUTES THEN SHUT OFF. I STARTED IT A FEW MORE TIMES AND IT STARTED JUST FINE BUT, IT WOULD SHUT OFF AS SOON AS I TOOK MY FOOT OFF OF THE GAS PEDAL. THERE ARE NO CHECK ENGINE LIGHTS ON. HELP!
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Friday, October 17th, 2008 AT 10:33 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

Just to add to what kerenself has posted, even if the check light is not showing, do a scan as not all set fault codes will activate the check light.

Mark (mhpautos)
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Saturday, October 25th, 2008 AT 8:55 PM

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