problem with 88 f150.

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Nov 11, 2011 | 06:31 PM

UnDeaDEchos

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problem with 88 f150.

i have an 1988 f150 302 V8 truck. a couple months ago the truck had decided to stop running. it quite quietly, there was no shaking, like i turned the key(i didn't). that day, about 2 hours later(having it been towed to a close parking lot), i had orielly auto shop read the code, and the reader came up clean. no problems. now it's at my home, have replaced, ignition control module, the ignition relay, fuel pump relay. the fuel filter, it has a new rotor and cap, i was told by my dad that the needles in the fuel injecters too???? i'm not sure if that makes sence.
trucks preformance up to date, it will start on occasion, it can stay running for 30 minutes, or quite in 5 seconds. it quites the same way, silent and nothing else. any ideas.

Nov 11, 2011 | 06:41 PM

danr1

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From: Sand Lake, MI

When it won't start whats it lack spark or fuel?

How much fuel pressure does it have at the rail when I will run and when it won't?

Nov 11, 2011 | 07:43 PM

UnDeaDEchos

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how do you messure fuel pressure. i don't know much about vehicles, tbh, kind of an idiot. but, from the test i just did, i don't think i have a consistant spark.

Nov 11, 2011 | 09:02 PM

danr1

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From: Sand Lake, MI

Quote:

Originally Posted by UnDeaDEchos

how do you messure fuel pressure. i don't know much about vehicles, tbh, kind of an idiot. but, from the test i just did, i don't think i have a consistant spark.

You'd need connect a fuel pressure gauge to the schrader valve on the fuel rail, kinda looks like a tires valve stem. (No you can't use a tire pressure gauge!)

I'd check it, rent a gauge if you have to.

And also verify if it has spark or not no start condition.

Nov 11, 2011 | 10:00 PM

UnDeaDEchos

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well, here's what i did to see if it had spark i took the spark plug out and connected it back to it's wire. i had someone else try start the truck. i held the plug next to a metal that was ground. and i got one spark. i had the other person start it three more times. but just that one time it sparked.

Nov 11, 2011 | 10:15 PM

NWF150

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From: Eastern Washington

Sounds like a bad ground, check the connections to the battery and then follow the cables all the way and see if there is a break or if the ground is good. Thats where I'd start.

Nov 12, 2011 | 03:57 PM

89lilfoot

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possibly distributor issues and or timing chain. Do you have access to a multi meter to do some tests? Also did O'reilly's guy run all of the scanner tests? I find that hard to believe. If it turns out to be dist. problem. DO NOT buy a remanufactured one. They suck! if they work at all. Best of luck.