Hi kinda knew to this site. My brother is looking at a first gen dodge truck. auto,4x4,longbed reg cab. problems is the guy were thinking of buying it from says theres diesel fuel getting into the engine oil. any help would be great thanks. Joe

 

There are two main causes for this. The first is easy and cheap, the second not so easy but less common. Most likely the diaphragm in the lift pump is torn and the fuel is getting in that way, it will take you about 45 minutes and cost you around $60 to replace the lift pump. The next most likely culprit is the front seal on the injection pump, which is more involved but less expensive.

 

wannadiesel
Its too late now but where are the $60 LP , I paid $95 and thought that was good .

 

ALL day long at my parts store but I do have a business account

Even the thieves at Da' Zone are only $72

 

If you want a genuine Cummins pump $95 is normal. Aftermarket ones at chain auto parts stores are around $60, and usdieselparts.com sells a Delphi unit for around $40 after shipping.

 

I paid $80 or so a few years ago for a "genuine Cummins" lift pump. Opened up the box, and it was the exact same Carter pump I could have bought at the local parts house for $15 less, plus saving a 2hr round trip. The guys at Sikeston are crooks the same as the dealer.

Daniel

 

why not grab a piston style pump off ebay and be done with it? Theyre like $45.

 

thanks for all the help very helpful info this is a great site. Where do I need to go to get the seal for the injector pump, is it availiable at napa or some place like that thanks again. Is there any place on here that tells about removal of the injector pump thank

 

Change the lift pump first, it's much more likely and it's a whole lot easier.

You can get the injection pump seal from a diesel fuel injection shop.

There are several threads on injection pump R&R.

 

thanks a lot for the help

 

What seller is selling them for $45? All of them I see are $100+

 

I've seen them for $45. Type the part number in the search box and it comes up, or did a few months ago. I have been told they are seconds, but if you get one that doesnt work, he swaps them out reasonably.

Daniel