1991 F150

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Feb 5, 2014 | 08:46 AM

cbmule

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1991 F150

I've replaced fuel tank, fuel pump, fuel filter. Truck still won't start without using starter fluid. Runs fine after starting. Any ideal what to change next to fix problem?

Feb 5, 2014 | 01:22 PM

jas88

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From: Greater Austin, Texas

How old is your fuel? Have you checked ignition timing? Does this truck still have it's OEM EFI setup?

Feb 6, 2014 | 07:38 AM

cbmule

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Quote:

Originally Posted by jas88

How old is your fuel? Have you checked ignition timing? Does this truck still have it's OEM EFI setup?

Fuel brand new full tank. Have not checked ignition timing. It does still have its OEM EFI SETUP.

Feb 6, 2014 | 08:27 AM

jas88

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From: Greater Austin, Texas

Does this only happen when it's cold, the engine I mean? If you go to the store to get a six-pack, does it start back up when you come out? Or do you have to use starting fluid always?

Feb 7, 2014 | 08:02 AM

cbmule

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Quote:

Originally Posted by jas88

Does this only happen when it's cold, the engine I mean? If you go to the store to get a six-pack, does it start back up wh

en you come out? Or do you have to

use starting fluid always?

Only have to do it if sets for over couple hours.

Feb 7, 2014 | 09:27 AM

Monteg0

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From: Lincoln, NE

Have you checked fuel pressure at the rail when you cold start it?

Feb 7, 2014 | 12:43 PM

jas88

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From: Greater Austin, Texas

Do you hear the pump run when you turn the key to "on"?

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Feb 11, 2014 | 05:05 PM

jas88

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Joined: Feb 2002

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From: Greater Austin, Texas

OK, try this, cycle the key a few times off and on, leaving it in the on position for at least 2 secs. Do this about 5 times and then try to start it. If it starts up, then you are losing residual pressure on the line and your pump is not strong enough to pump it up while cranking.