2001 silverado wont start first crank

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Mar 23, 2019 | 2:48 PM

#11

Irish_alley

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Joined: Feb 2019

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From: Maryland

i know on the tbi trucks the OSP would override the fuel pump relay after oil psi reached 3psi. the OPS is only meant to be a backup for when the relay would fail. i didnt know the 96+ still used this method and not sure they did but sure does sound like it. can anyone confirm?

Dec 11, 2023 | 7:27 AM

#12

Player One

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Joined: Dec 2023

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Quote:

Originally Posted by oldchevy

It is more likely that the check valve in the fuel pump assembly is bad. My truck did the same thing and I added an inline check valve in the fuel line near the fuel tank and that solved my problem. i bought the check valve on Ebay and I needed some fuel injected rated fuel line and some hose clamps. Total cost was about $15.00 and I did the installation.

Shot in the dark since this is an old post but this is what I am trying to do and figure the best way, I was thinking to splice in a check valve with ****** ends into the nylon tubing coming from the tank.
However did u just use fuel hose with the valve and hose clamped the valve and then at the pump and where it connects to the hard line.