Just put in gauges this weekend...fuel pressure is 10 psi @ idle, 7 @ cruise, and 4 @ WOT. Wondering what I should do. I think I read that 5 psi @ WOT is the limit. If I take it to the dealer and they do their test and conclude it's not bad enough, they will probably charge me for their time. Then I guess I would be out that money plus the cost of a new lift pump. The gauges are my first mod, but I've got a MAD ECM coming this week and a Scotty II. Anybody face this after installing gauges? What do you think the dealer will do? I'm around Austin, Tx anyone had a good experience with a dealer who has a diesel tech?

Steve

 

Well the numbers mean that you need a new lift pump.

 

Be sure you unhook the gauge from the banjo before taking it in or the will blame the failure on your gauge. Don't ask me how I know. If they'll do it under warranty, let them eat the cost. If not, hook yourself up a holley fuel pump and be set for a very long time. I've had mine on for almost a year and even with slamming it into rocks and submerging it in mud it's still holding 15psi@idle and 12-11@wot with 275 injectors and a comp.

 

5 psi is the minimum acceptable WOT fuel pressure but everyone with bombed 24v likes to see a fair bit more than that.....the dealer will likely say that your LP is fine but you already know it is not......don't waste your time and money at the dealer......buy a new LP out of your own pocket - there are some good online deals out there if you search. If you are getting a Scotty II, I would suggest adding a Smartfuel kit to that order. It will greatly improve the life and performance of the LP.......With a half smoked old LP and my Comp on 5x5, I can barely get the WOT fuel pressure down to 9 psi......0n 3x4 I can get it down to 11 psi, cruise at 12.5 psi and idle at 13.5 psi.....all with a very high mileage LP and a Smartfuel.

 

So is the Scotty Smart fuel just modified banjo bolts, or also larger line? I did notice the larger hole size on the tapped banjo I installed with the gauge vs. the stock bolt.

 

The Smartfuel kit completely replaces all banjo bolts with JIC fittings and high quality 1/2" hose.....check out the install instructions at Scotty Air Systems and check out the pics of what replaces stock fuel line and banjo bolts.

 

looks us '02s our LP are going ....going ...gone I'm going in this fri to get both V44 & LP changed under warrenty, I hope they improved both pumps

 

You think the SmartFuel kit would void the warranty if you did happen to lose a pump?