I have a problem that is bothering me. I suspect the lift pump is going bad but I want to be sure before Idrop the money on a new one. This has been a rough couple of weeks and money is tight.I had my gauge acting up and bouncing all over (Glowshift). They sent me a new sender and all was good. Took it for a test ride and verified that I had pressure. Not real good pressure but 12lbs. at idle and 6 at WOT with the Quad on. Was talking to a friend and the pressure just dropped to zero. Power off type of drop, not gradual. Truck stayed running. Shut it down and restarted it and pressure came up for a little bit and then off again. Put a mechanical gauge on along with the electrical and verified that it is shutting down. Tapped on pump to no avail. This was a NAPA pump bought three years ago. At that time I had bought the truck and found that it had no fuel pressure, Nobody knows for how long, previous owner told me it always ran well. So this si the second time. My VP is on borrowed time but right now I need to know what you guys think is the issue here?Rick

You can adjust the regulator on that pump. It might be in the instructions, or their website. Mine was a bit low when installed & I cranked it a bit.Ed

No Adjustments that I can find on the DDRP. I may have mislead when I said mine was the 95 gph. Someone gave two choices for the DDRP and mine is the higher choice. After a lot of checking it is not 95, it looks like maybe 75. But there is no adjustment that I can see unless it is under the mount and I am not going to remove that and void the warranty.

Sorry, mine's the FRRP pump, but I did find this: http://www.genosgarage.com/installation_instructions/FASS_DDRP02.pdf Ed

  Yankneck696 said:

Sorry, mine's the FRRP pump, but I did find this: http://www.genosgarage.com/installation_instructions/FASS_DDRP02.pdf Ed

Yea, I got that with my pump. Got hold of Geno's and I have to say the customer service is first rate. Seems that there were some DDRP pumps that left FASS with the wrong pressure relief springs in them. Of coarse FASS didn't tell the distributors, just gave then the right springs when the complaints started coming in. They are overnighting me the spring ad a relocation kit. Meanwhile FASS e-mails me and said, "It sounds like you have a weak relief spring, we will send you a new spring." So basically as far as FASS is concerned they screwed up but you have to fix it! OR you can send them the pump and they will check it out and then send it back. That could be pricey for someone who is paying to have the work done on their truck.

OK, Got the replacement pressure relief spring that Geno's overnighted to me and put it in and I am back in business. Totally different spring, somebody screwed up at FASS! Pressure is actually a bit on the high side at 23 idle but it does not seem to be giving me any issues. Went for a test ride and pressures look good. I have 23 at idle and 18 at WOT with the Quad on. I have not relocated the pump yet, bad weather and a job coming up on Friday that involves a long drive so I am just leaving it as is for now. Thanks again to Geno's for bailing me out on this one.Rick