Engine/Transmission (1994 - 1998) Fuel press question?

[The patriot]

It's been running about 20 PSI so I pulled the O. F. spring and tweaked it a little.

It's staying at 20 PSI.

Do I need a new lift pump?

Eric



PS 1998 12 valve, 5 speed.

 

[CumminsPower98]

My pressure came up when I did this to my on my old overflow valve. Might be the pump. I don't know though, see what others think.

 

[The patriot]

Thanks.

Anyone else?

BTW where's the cheapest place to get a supply pump?

Eric

 

[SEmerson]

20 is still ok. But if you stretched the spirng it should have went up. You may need a filter. Have you changed it?

 

[MDW]

Pinch the rubber return line briefly while watching the gauge, if it spikes quickly its the overflow. If it doesnt spike (40+psi) quickly or not at all its the lift pump.

 

[bmoeller]

There is a fuel strainer also, that could be dirty.



http://www.dodgeram.org/tech/dsl/filter/pre-filt_clean.htm



I bough my lift pump from the Case-IH dealer. Less than $100, including the 2 gaskets. You do need to change out one of the fittings.

Originally posted by bramage

Here ya go.



Lift Pump: J936317

Gasket: J939258 (two required)



This is the exact same Carter pump in a Case box. You will need to swap one of the fittings from your old pump to the new pump this will be self explanatory when you hold the pumps side by side.

http://turbodieselregister.com/forums/showthread.php?s=&threadid=97766&highlight=lift+pump

 

[The patriot]

Thanks guys. Filter has a few miles on it, but I dont have a big drop in pressure across it.

I'm going to pinch the hose tomorrow and see what happens.

Eric

 

[The patriot]

I pinched the return line and it quickly rose to over 40 PSI.

Guess stretching the spring in the overflow valve dont always do it. Sometimes it just needs replacing.

Eric