Lift pump @ 10psi dealer wont replace

[700rmk]

I took my truck up to Gillette diesel in SLC. Lift pump at startup is at 10 PSI, full throttle drops to around 7. This is with no load, so I can imagine what the EZ box is dropping it to.
Anyway the dealer said it was within specs, but just barely. I guess I will let it take out the injection pump and then they can pay for both later instead of the cheaper one now, stupid, stupid, stupid!!!

Any ideas on how I can get them to replace it?

It goes in to the dealer back to the virgin they believe it is!!

By the way Rich at Gillette is great to work with!!!

------------------
2001 WHITE 2500 QC, LB, 3:54, 4x4, ETC/5-SPEED, HD TRANSFER, FACTORY FOG'S, AUTOMETER ULTRA-LITE PYRO & BOOST, BOSCH 275'S, JARDINE 4" IRRIGATION PIPE, BFG 285/75/16 ALL TA'S ON EAGLE SERIES 58, ICS NERFS, ARMA TUFF SPRAYED BED, MAG-HYTEC REAR WITH AMSOIL 75-90. EZ FIXED. 280HP 750 FT/LB. AT 1800 RPM. ON THE MUSTANG DYNO AT EDGE. 26000 MILES SINCE JUNE ****POLARIS 700 RMK RULES THE HILLS****

[This message has been edited by 700RMK (edited 02-20-2001). ]

 

[HEMI®Dart]

700RMK,

I found these lift pump specs from Fritz's web page:

"On the inlet side of the fuel filter, up to 16 psi is normal with the key on and engine off. During engine cranking, the pressure reading should be about 7 psi, while a minimum of 10 psi with the engine running is typical in a system that is operating normally"


I'd say your 7 psi @ WOT is out of spec?


There is not a TSB that that states this spec, But if your Engine serial # falls under this
Service Action below, you should be getting a new tansfer pump.

"If the engine serial number falls on or is between 56662576 to 56671920, then the transfer pump will require replacement. "
http://dodgeram.org/tech/tsb/2000/Sa_00-11.htm




[This message has been edited by HEMI®Dart (edited 02-20-2001). ]

 

[700rmk]

Thanks Hemi!

So now im wondering if the bad bucking I get while towing is fuel pressure related or something else?

RMK

 

[HEMI®Dart]

See the TSB in my updated post above

 

[700rmk]

Just my luck, I fall outside of these numbers.

RMK

 

[Steve St.Laurent]

I doubt it's fuel pressure related. My truck was down at 4 psi driving down the road and would go to 0 under WOT with no bucking. According to Mark Chapple at TST you have to get down to around 5-7 psi of vacuum before you get a bucking problem.

-Steve