fuel presure 2001 deisel

[Ironhead]

ok i posted this question on dodge talk.com 2gen deisel but all i am getting is gomers telling me what they get after they slapped a after market pump!!!!

i need to know what the stock fuel presure should be on a 2001 cummins dodge ,,i installed a boost gage and a fuel presure gauge started out with 7 to 10 sittting in drivway ,,went for a trip around the block and now it reads a steady 4 or 5 ,,,wondering if my lift pump is weak or not ??i have the fuekl isolator i am going to bleed it again this morning to see if it goes up ,,,trunk runs strong even at 4 lbs of fuel presure

any deiels peeps here???

 

[ctsrt10]

does your truck still have the in tank pump??? or did you put it on the frame rail like the 02s. it sounds like your intank is goin to shit the bed cause you should be around 8-9 drivin

 

[Voodoo]

time for a lift pump dude or u are going to burn up the vp44 injector pump. it should be around 10 at idle and never go below 6 while driving.

ohhh yea, above 20 psi will screw up the pump too. if u leave it stock a airdog 100 will do and connects to the stock lift pump outside the tank, the airdog 150 uses a tank straw and u cant go below 1/4 tank

 

[BDR SRT-10]

I have a 2000 2500 CTD with 210,xxx miles now and after numerous bought and failed lift pumps, I had mine put in the tank with zero problems so far after about 2 years and +30,000 miles ... At idle she reads @ 8, @ WOT she dips to 2 with no problems like I said... I would def. recommend re-doing your fuel delivery set-up with that chip you've got or your VP-44 will face certain demise Either the OEM in tank pump retro offer or a FASS or AIRDOG set-up...

I'm all stock with the exception of a K&N drop-in filter and 4" exhaust up to a 5" stack and I pull a 30' gooseneck trailer 3-4 times a week...

 

[BDR SRT-10]

Forgot to mention, if you don't already know about it, this site :http://turbodieselregister.com/ is the best resource, IMO, for ALL Dodge Cummins Diesel related questions and products...

A wealth of info here no doubt

 

[Voodoo]

here is where i hang out for all my diesel questions http://www.cumminsforum.com/

 

[Ironhead]

thanks thought so also about lift just wanted to make sure

 

[mopower1958]

Go to Cummins and buy a lift pump. Cost 155.00 plus tax. A VP44 does not need to get below 5 psi. The check valve will stick on the lift pump and will cause air pockets in the fuel causing the injection pump to overheat. Over 20 psi will bust the diaphragm in the injection pump. A great high volume pump is the F.A.S.S. 150. It connects to the stock fuel sender, has a large primary and secondary filter and mounts below the bed right beside the fuel tank on the frame. What kills the factory lift pump is the heat and vibration due to being mounted on the engine.

 

[Ironhead]

new update just for kicks and wanting to smell like deisel ,,,i took the isolator off and i hooked gauge straight to fitting ,,,and BANG i get about 10.5 on psi steady,,
so i will drive it to work to see if it stays ,,,looks like i got a crappy isolator

 

[breederofkoi]

Be careful, the VP44's are temperamental.. Lift pump around 8-10 psi at idle, high idle under load should be around 9-12 psi (if I remember correctly) no more than 17 psi. Check for restrictions on inlet side. You don't wanna starve a VP44 for fuel, 90% of fuel supplied by the lift pump is used strictly for cooling and lubrication, then returned to tank. Early VP44 had a brass timing spool, which would wear and stick, they have since upgraded to steel ones (may have been the other way around, I'd have to check my service bulletines), I'd need your pump serial number to tell which timing spool you have.

 

[Voodoo]

i just did a airdog 150 lift pump and 150 hp injectors last week on a tweaked diesel. loved doing the test drive. the truck had aurora 3000 turbo, edge/juice with attitude, intake, strait piped, cai, meth injection and a few other things. man u can make those big tanks fly.