1985 6.2L Diesel, with and without cold advance

This is my '85 K5, initially running fine just after firing it up and the cold advance solenoid engaged, then once it warms up a bit and runs on it's own it starts shaking and smoking. The pump is already rotated a little towards the drivers side (degrees to follow...)

Category:

Autos & Vehicles

Tags:

• S7300767

[livelliny]

I put a new IP in it and adjusted the timing until it had a good idle, good diesel rattle, and no smoke. It runs like a dream now.

[livelliny]

@newyorker

I wound up replacing the injection pump with a 4911 from a '93 6.5L turbo. It was pretty much a direct replacement aside from me having to turn down the fuel output. If left stock it would have overfueled the engine resulting in high EGTs. To sum up, the old IP was bad.

[josh216882000]

Runs like a cam'd muscle car. lol

[livelliny]

@josh216882000

You should watch the other video I did, after the new injection pump and with the straight pipes. It sounds a bit more aggressive.

[michaelovitch]

it shake and run like crap because you retarded the injection.

you have to advance it a bit : it must be rotated towards the passenger side.

cold start system advance the timing.

keep the marks on pump and block aligned then rotate just a hair passenger side.

[78newyorker]

Did you ever find out what was wrong?