Thread: 5.3 LS fuel pressure drops/ hard cold starts!
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Old 02-05-2016, 06:25 PM
Efi69Cam Efi69Cam is offline
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Sticking open injector? I know you said returnless, but not all 5.3s are. The older ones have a failure prone regulator on the rail. What year is the truck, I know my 2005 is returnless, but my bro's 2000 has a return.
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