Moregrip,
How would I check the fuel pump voltage?
Wish Blownchevy would chime in on this, So at least when I call him on Monday he would be up to date,
Thanks Everybody
Mark

 

with a voltmeter

 

When I put my inline 255lph pump I didn't see one(1) psi increase in fuel pressure. It was like I didn't even install it. But it is running because I can hear it whine when I am idling next to another car or wall and the sound bounces off the wall. Wouldn't the FPR keep your pressure from rising no matter what kind of pump you have in there? It would just keep your pressure from falling off at high RPM's right?

 

I ment is there a way to do it without dropping the tank?

 

I would just check as close to the pump as you can, make a judgement call. Maybe you have a weak pump, maybe there is a pin hole in the clear accordian flex replacement tube. unfortunetly you'll just have to troubleshoot that crap, which can be a pain in the ***, I know, but your low on FP and it needs to be done.

 

If this problem started right after you installed the supercharger system then there is an issue with the pump install. This is just like the fuel pressure regulator on the rail, you need to lube it up and be sure to get the module seated properly when re-assembling it. I bet you a buck that pump is not seated all the way in the bucket. Bad news....gotta drop the tank!

 

BlownChevy,
I had my install done in Aug. Had the fuel filter replaced at the same time, This just started recently. I don't mind dropping the tank if I have to, Gotta get this fixed, I just want to only drop it once.
Thanks and I will call you tomarrow if that is OK?
Mark

 

Have you changed anything since you installed the blower?

 

If you measure the voltage to the fuel pump external to the tank, it can read to spec of say 12 volts, but be inadequate when the pump is under heavy load and I know of no way you will be able to tell. Maybe someone else knows of a way to test voltage to the pump at WOT and high RPM. Maybe by measuring current draw or resistance through the circuit?

 

That is how it works AFAIK. The in-line pump reduces strain on the in-tank pump and helps to ensure an adequate supply of fuel at high rpm with higher flowing injectors.