lift pump

[AKostman]

OK

I'm still looking for more answers on lift pumps. Is the lift pump covered by warranty? Extended warranty? Will it take out the injector pump when it fails? If you have a stock rig without pressure guages how can you tell it's going TU?

Thanks

 

[FFutch]

Hey,you really outta have a f. p. gage. I just replaced my dying lift pump on my own. "I am my own warranty station". . I think tho it's covered under the 100k engine warranty. Correct me if I'm wrong guys. Doug

 

[FFutch]

Give us a little more info also. If you're 24V your injection pump relies on proper fuel pressure to survive. Doug

 

[jwilliams3]

The lift pump is an engine component so its covered by your

5 year/ 100 mile Warranty.

It is simple to change though if your into do it yourselfing.

 

[Briar Hopper]

The main reason most of us change out these lift pumps ourselves, rather than letting the warranty cover it, is most of the 5 Screw Stealerships (special thanks to whoever coined that name ) insist if the truck is running, the lift pump is alright. They just don't have a clue. A few lucky individuals have located dealerships that DO know what they're doing, but those are few and far between.

A bad lift pump can cause your injection pump to go bad.

$150 at Cummins, and 30 minutes of your time, is preferable to spending days, several days, at the stealership when you need the truck, and have things to get done.

See my thread on building your own fuel pressure gauge CHEAP.

 

[KennyM]

I have another question for the guys who replaced their own. Mine is bad. 11 PSI at idle, 8 PSI at 65 hwy, 0 at 3/4 toWOT. The new one came in last week. Question. It looks like I have to remove the feul filter to get to the pump. Is this the case, any other helpful hints. Thanks. Ken

 

[Steve St.Laurent]

I'm moving this to the 24valve drivetrain forum for better exposure. KennyM - there's an article in issue #34 (the current one) on how to replace the lift pump from the top of the engine, I've always replaced mine from the bottom by removing the starter. AKostman, on a stock engine it can be bad for a long time before you notice it - the only way real way to know it's bad is to put a fuel pressure gauge on the truck. Many of us recommend adding a fuel pressure gauge even before EGT and Boost gauges (me included)!

 

[Briar Hopper]

Changed mine from below the first time. The next two times I did it from above. Below, it took me an hour and a half. From above, it took 20 minutes. Doing it from above is a little tricky, you have to do it mostly by feel. I didn't have to move anything, but endured a couple scratches squeezing my arms in there.

 

[KennyM]

Thanks For your comments Steve. I will read that article on issue #34. ken

 

[John]

AKostman, as Briar Hopper stated, a dead lift pump can (AND HAS) taken out the Bosch VP44 injection pump on numerous occasions. Chuck Arnold of The PowerShop wrote a two-part article on this very subject entitled, "On A Wing And A Prayer" (Dec. '00/Jan. '01 Western RV News, Nuts & Bolts column). It seems the injection pump is most vulnerable (and apt to fail) when the lift pump dies (or is extremely weak) while acsending an appreciable incline under heavy throttle/power circumstances... once the top of the grade has been reached and the throttle has been appreciably closed or "snapped shut", the VP44 seizes up (i. e. , not enough fuel to properly lubricate the injection pump).

 

[TurboDog]

lift pump warranty

Akostman, I called the chrysler 1-800-992-1997 customer service number and they told me the lift pump is not covered by the engine warranty. The local dealer here told me it is covered, so who knows. I got mine from Cummins, screw the hassle of going to the dealer. On my truck I really couldn't tell the lift pump was dead until I bought a BD fuel pressure kit and checked it. I do think it feels like it runs stronger now that I have the new lift pump, especially at wide open throttle.

 

[rickhans]

TurboDog, see my lengthy posting on my lift pump experience and warranty questions.