Question about 1985 Chevrolet S-10 Blazer

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Truck is back firing after about 20 miles, it will no longer stay running. Will turn off and turn back on on after a few second, then will continue this as long as I can keep the truck running. It does not run hot. Could it be the fuel pump? I've put a new distributor and plugs, have not replaced the wires yet.

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  • Chevrolet Master
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It can be fuel based issue. Check for fuel pump pressure and more important VOLUME. There is a strainer on the pickup in the tank, and it will restrict in the method that you describe. This screen situation can cause false fuel pump diagnosis.

Also look for inline filters along the fuel line from tank to fuel pump

Posted on Nov 13, 2010

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