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Old 12-20-2016, 10:16 AM   #1
lux
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Join Date: Oct 2016
Location: Austin, Texas
Posts: 306
LS1 fuel pump prime intermittent

My 72' has a LS1 swap with a fuel pump priming problem.
On occasion after driving for a while and switching the engine off for a while it will not start. It turns over fine but I don't hear the usual fuel pump priming that I get when switching the key on.
This has happened on thee occasions. After towing the truck home and letting it sit for a while it starts just fine.
I thought it might be wiring to the fuel pump and I checked it all. I found one questionable connection and fixed it, but I guess that wasn't the real problem because it happened again.
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