Hey, I installed my Walbro pump a few months ago and it didn't have good directions at all ( I think a page or two were missing) I don't know how to adjust the pressure of it. It's holding good at about 15psi, but would like to increase it as I stack, injectors and so forth. If someone could PM me detailed how to adjust the pressure I would appreciate it. Do I need to take it off the fuel lines in order to do it??? - That's my main question. Thanks guys!

 

I'm not sure which setup you have, but surely it's got a bypass regulator with a spring in it. Most are simple--just unscrew the regulator, stretch the spring a little so it raises the bypass psi requirement, and reinstall.

 

Ok, is there any pictures around here that kinda shows me what's what. I have several things on mine that I can screw/unscrew. Need to make sure I'm doing the right one. It's in my sig.

 

http://www.cumminsforum.com/forum/98...m-install.html