Fuel Pressure Need Help
 

06 mega with smarty ,5'' exhaust and k-n filter smarty is on 5 and I also have a quadzilla monitor a short time ago like 2 months it would pull 34-38 fuel pressure today only 26 ps I also have boost fooler truck only has 7,000 mile's what is wrong or is this a winter thing :sos::sos::sos:

Change your Fuel filter and see if it goes back up.

sorry I put a new one in less than 1500 mile's also I can feel the truck fall on it face when it runs out of fuel..

Are you using the Quad Commander?

no just monitor with fuel, egt and tran temp

smarty shouldnt drian it enough to fall on its face maybe u got some bad fuel id check the fuel filter again, and put an new one on it

Ummmm....am I the only one who actually read that he said he had 34-38 PSI and now it's only 26 PSI? You must have something hooked up wrong. Your stock pump in the tank is only good for 9 PSI on a good day and under WOT maybe 3-4 and with a fueling module or programmer 0 at WOT. So, you could call Quad and see what's going on but if I were to bet you have the rail fuel pressure plugged into the lift pump fuel pressure on the Quad or vice versa or just not wired properly at all. If you have a Walbro or other high performance pump on there with no regulator and really do have that kind of supply pressure then I want to know about your system because it could be a breakthrough in the diesel world.

Ya......26psi is still way to high

what ya got for fuel delivery system there to get those kinna pressures

if the truck falls on its face then yer starvin it for fuel in the delivery system

OR yer PSV is popping off and starvin the injectors

those numbers are from the monitor truck has been running for 6-8 mths with these mod no other changes have happened

Where is the sending unit located that runs your Fuel pressure. Is it on the CP3 injection pump or on the fuel rail? If it is on the CP3 injection pump, which line, the upper one or lower one? Just trying to verify the install here. That will tell us where you are tapping into.