Pump, runs perfectly fine out on the bench. I have ran it 5 different times, not one funky noise coming from it.. Smoother and as quiet as can be. I am about stumped on this.. I don't what the prob could be. I put my finger over the the discharge side, it build pressure like a ****... What could it be ???? I am about disgusted with it...

John

 

How come the bosch site say's its a inline pump?
http://boschfuelpumps.com/

 

because it is. My thoughts on your problem is your intank pump is alot larger than your inline. Your inline cant keep up with your intank pump and is causing excess stress and pressure on your intank when running because it cannot flow as much at the same psi.

 

this is what ive been thinking all along. its like having a plugged fuel filter, which can cause a pump to fail

 

Ok ok, I have removed the 255inline that was infront of the bigger intank. Problem is still there/here.. I pulled the pump ran it a few times, even put my finger over the discharge side, it builds pressure. I think ima try it back in the tank tom.. It makes a fierce noise in the tank, but as quiet as can be on the bench...Just can't figure why the pressure is dropping.. Could it be my FPR ??

John

 

what kinda regulator you got?

 

I am running the stocker in the fuel rail, was told by many to KEEP the one in the rail..

John

 

are they sending you a new pump?

 

If it turns out this one is truly bad, they will. I am going to put it in a bucket of gas tomorrow, see what it does...

John

 

whats the reason for keeping the one in the rail?