01 no power hot

[IDI87]

Okay. I know nothing about cummins, zip zero zilch. Through a ford idi or a 6.0 at me and I'm fine. However my buddy needs help with his 01. Cold it runs fine but hot it has no power, blows blue smoke, and doesn't idle. Oh and no codes. Any ideas where to look?

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[Philip1]

If I had go guess I would say the vp44 pump is likely going out

 

[IDI87]

If I had go guess I would say the vp44 pump is likely going out

Oh he's going to love that answer lol

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[Philip1]

I would recommend upgrading the lift pump at the same time as replacing the vp44. Doing so will.make the replacement pump last longer. The stock lift pump is poorly sized to the requirements of the engine and can cause the vp44 to overheat and eventually fail.

 

[Oledirtypearl86]

Yup x2 on the vp44 and lift pump