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TN454K3500 replied to the thread 97 454 L29 Long Crank.10-4, did not think about that. I’ll give it another try. I’m gonna have to get someone to help me. I want to try to leave any clamp... -
Wow.. I'm surprised that pump can deliver the running pressure readings you're getting. I guess I take it back when I said you have the...
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You need to pinch both the supply and return line to 100% rule out the fuel pump check valve leaking pressure back to the tank. But you...
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TN454K3500 replied to the thread 97 454 L29 Long Crank.So here are the results... scratching my head a little. I went back to the manual as @Schurkey suggested and followed the steps for...
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According to Rock, which isn't always 100% correct, but they're usually pretty good - but like he said, it can be tricky, especially...
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I bought 4 or 5 different FPR before i finally got the one i needed and sorry to say i can not remember exactly what one i installed but...
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Im just listing the numbers i can find for pressure. I did learn when going through the regulator dance you need to make sure of the...
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TN454K3500 replied to the thread 97 454 L29 Long Crank.You mentioned, "Pinch off the return line". Where do you do this at? Can I do this back at the tank or do I need to do this up near the...
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TN454K3500 replied to the thread 97 454 L29 Long Crank.I got everything installed this evening and put about 5 gallons back in the front tank. I have the same fuel pressure readings...
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TN454K3500 replied to the thread 97 454 L29 Long Crank.I've got the correct pump ordered. Should be here tomorrow. Gonna try to swap it out Friday. I'll report back.... first gotta get the...
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He bought a pump for a TBI 7.4 (Delphi HP10025) It's performing as designed. It's the incorrect pump for a Vortec. Richard
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Check your ground at the tank for the pump and the relay to make sure it's getting full power to it. 45-ish PSI is weak. This a Delphi...
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Low pressure to be sure. I'm surprised you're not also complaining of low power or a bog when you mash on the pedal, but I guess that...
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Yeah, your FP is low for sure. You can narrow it down to pump or regulator i think. Pinch off the return line and see what the pressure...
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Spec for 7.4L in '97 is 56--62 psi, key on, engine off. The difference between your reading and spec could easily be due to an...
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