Davez

The tork tek. OFV020 adjustable is a great remedy for the overflow valve, has the right sized openings for proper fuel pressure and flow to keep P pump cool . (DONT buy the updated ones that they have out there, they shrunk the inlet hole from .168 to .105, increases your fuel pressure and will shorten the P- PUMPS LIFE!) You need to get the lift pump going ASAP.... or you will just run like everyone does when they have a crappy overflow valve. You will be running out of fuel in higher RPM's, smoking when cold,ect. 7-10 lbs is no good for the P pump......early burn out, costly to repair. One more thing you might want to consider is the stock fuel line will only let your lift pump run at aprox. 64% idle to 35% 2500 RPM. The lift pump is good for 1.51 gal per min, not the .52 GPM they have it running at , to achieve 100% you need to resize your fuel line from tank to lift pump. I did mine to 9/16 ID tank to p pump and eliminated the prefilter and heater all together , raising efficiency of lift pump form 64%-34% to 100 % all the time . This lets the lift pump work easier, and the P-Pump run much cooler! with full fuel to max RPM. ( Dont waste the $$ on the 1/2 " kit they sell , because costs more and wont be running at 100%) .You might think about a BHAF for more air in its a great combo with your MODS!. I have Pics of the project, I will post them soon. Good luck Dave

Hi ,dont know if you have fixed your problem yet. As you know 30 psi is good for the p pump. sounds like your over flow valve is junk . stock should be around about 22 to 25psi +or -. spring gets tired psi drop and no power . Couple of quick fixes there that can work for a while. I would buy the adjustable from Tork Teknology its max is set to 32 psi from factory should bring your pressure from 7 to about 22-25 at idle and max out at about 30+or -. the stock replacements are different from the originals they made the return hole smaller I believe it went from 0.0180 to 0.0120 which increases pressure but doesn't allow for adequate cooling and longevity for pump life.Good luckDave