A friend is stumped by a problem with his truck, so I thought I might get some insight here. I haven’t actually seen the truck, all that follows is from what he described, I’m just the messenger here. The truck had been running fine on a used engine installed about six months ago. Then he ran it …

Did you figure anything out ? I have almost same exact problem: 1992 Oldsmobile Custom Cruiser 5.7 L V8 Was running fine till it stalled pulling into Dentists Office. Restarts had only very rough idle, giving gas killed it. After many tries, now won’t start at all, but cranks and idles for abou…

@M80 - you probably don’t have the exact same problem. You’d be better off starting your own thread and description. Include all info about the state of maintenance. @WesternRoadtripper - there’s no point in doing anything else until an actual fuel pressure gauge is put on it. Having fuel pump o…

M80: You may have a similar electronic issue. I just don’t want to encourage my friend to throw parts at this problem without a diagnosis that points in that direction. My friend is convinced the problem was caused by running it out of gas, and he now thinks it’s an electronic issue. Other than p…

Thank you Cigroller. I’ll see if we can borrow a fuel pressure gauge. Is there an online source for the proper fuel pressure specs, or would an auto parts store have that? If the pressure is too low, what could account for that, given the fuel pump and filter are both new?

Autozone’s free online repair info will probably give you the fuel pressure specs & test procedure. As for the new pump - I don’t trust any part just b/c its new or rebuilt. Parts are commonly bad right off the shelf. I actually don’t expect the fuel pressure to be an issue. Its just that its a …

Thanks for advice everyone. Westernroadtripper, have you checked your gas quality ? I went back today and replaced fuel filter, and retested fuel pump by pumping into bucket (before filter). I noticed a lot of water in gas, as well as some nasty yellow-brown-green color. I’d say about 5% of vol…

M80: As cigroller mentioned above, you should start a new thread so people can focus on your issue and respond to your findings. You won’t get responses here, though you might stay tuned to this thread in case there turns out to be some overlap. In your thread, start from the beginning and descri…

He might try this link and run a powered jumper wire to the fuel pump terminal (G) on the ALDL. This will at least verify if the pump is working correctly. http://www.obd-codes.com/faq/read-gm-2-digit-obd-codes-free.php If it runs when jumped then pull any codes and start a diagnosis for the pump …

ok4450: thanks for the detail on jumping the pump terminal, and for the link. We do know that the new pump was working at some level. Before I got involved in this, my friend had opened the line somewhere near the fuel rail, probably not as safe as it should have been, and did get fuel supplied th…

93 Chevy pickup won't start, 350 V8

Maintenance/Repairs

WesternRoadtripper May 6, 2012, 10:58pm 7

Thanks again cigroller. Both options are easily available here for the fp gauge…I checked right after reading your first message. I may just buy one. We’ll start there and see what we find. FWIW: the pump is at least working as mentioned above, but I suppose it may not be producing the right pressure. I’ll post again when we have results. I am grateful for the advice.–Roadtripper.

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93 Chevy pickup won't start, 350 V8

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