hey guys,
so im having a problem with fuel pressure. ive a 255lph fuel pump installed and a aeromotive fpr. the problem is i cant get the pressure above 20psi ive got it turned all the way up. thing is doesn't matter where its turned to its 20psi regardless. also have an fic installed but thats doing no good till i can get this pressure thing figured out. any help would be appreciated. thanks

 

i think tightening it increases pressure, are you saying that the adjustment thing is tightened all the way ant still 20psi?

 

yes, and loosening it still 20psi...

 

Unless there are leaks, the only possible explanation in my head is that either the pump or the FPR is bad.. Or perhaps the pressure gauge lol

Try using some pliers to gently squeeze the fuel return line, obstructing the flow. See if that increases the pressure. If it does not, then the pump must be bad

 

what i was thinking, but everything was new. guess its possible i got a faulty product

 

By the way, is this with the vacuum line put on? If you disconnect it, does anything change?

Oh, also, is this after trying to start the engine? For me, turning key to ON is not enough to raise pressure even though you kinda hear the pump, you have to crank the engine for the pressure to get there