1991 Ford F-150

Tiny
NOLANPW
  • MEMBER
  • 1991 FORD F-150
Electrical problem
1991 Ford F150 6 cyl Two Wheel Drive Manual 134K miles

Having problems with the engine cutting out
and hard to restart and occasional Check Engine
Light as well.
When turning over the engine, the check engine
is on and the engine is running ruff, smoke and
fuel coming out the tail pipe, until all cyclinders
catch and fire. Then it runs great with no problems.
Usually happen when it sits for a while.
Put in new plugs/wires and cap and it ran good for a while, now it is happening again.
Working my way back from the plug, the next step is to replace the rotor. Does this require the timing to be reset?
Any suggestion in solving this would be appreciated.

Regards.
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Wednesday, May 14th, 2008 AT 11:54 AM

3 Replies

Tiny
OBXAUTOMEDIC
  • EXPERT
OK, First off I sugguest anytime you change the Cap you change to Rotor. Only makes sense. Why would you want to remove the Cap twice? Oh, and no it doesn't require the timing to be reset.

A couple questions.

Have you had the codes pulled? If not do so and post here.

What did the Plugs look like when you removed them? Any one look different than the others. Example covered with oil soaked with gas, deposits.

How long did it run good for once you replaced the Plugs cap and wires? How many Days, weeks, etc.

Post response here.
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Wednesday, May 14th, 2008 AT 1:58 PM
Tiny
NOLANPW
  • MEMBER
OK, First off I sugguest anytime you change the Cap you change to Rotor. Only makes sense. Why would you want to remove the Cap twice? Oh, and no it doesn't require the timing to be reset.

A couple questions.

Have you had the codes pulled? If not do so and post here.

What did the Plugs look like when you removed them? Any one look different than the others. Example covered with oil soaked with gas, deposits.

How long did it run good for once you replaced the Plugs cap and wires? How many Days, weeks, etc.

Post response here.[/Quote:22781a3869]

Thanks for the information.
After the plugs/wires and cap were replaced,
it ran for a couple of days before it cut-out and hard
to start and ran rough until again fired properly.
It seemed it was hard to start because it was flooded.

The Dealer was unable to get any code; did not find
any problems and even drove it for a while.

As for the pugs, they did look moist across the set. Also, changed the oil and noticed what look like gas infiltrated the oil.

Thank you.
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Thursday, May 15th, 2008 AT 2:25 PM
Tiny
OBXAUTOMEDIC
  • EXPERT
Ok, if you have a fuel pressure tester test the fuel pessure and pressure regulator. You may also want to check the Injectors they are probably dirty and not giving correct spray pattern or they are leaky and need to be replaced.

Your fuel system will not give off any codes. So anytime you have a problem and no codes are given then the problem could be fuel related.
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Thursday, May 15th, 2008 AT 9:42 PM

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