Smoke & shots

[valyidol]

Chevy Silverado 1995. At the start a lot of smoke. After warming up, the smoke disappears, but sometimes shots are heard. The nozzles are working correctly. Hydraulic lifters are working. I can not find the reason.
First video is cold diesel.
Second video is warm diesel.

 

[MrMarty51]

Wow, almost like a valve aint closing all the way when the engine is cold ?

 

[valyidol]

Wow, almost like a valve aint closing all the way when the engine is cold ?

Yes, I think about it

 

[WarWagon]

Run a compression test.

Run a leakdown test. As @Will L. would say.

Disable Injection Pump. Spin engine over and listen for it huffing or otherwise zinging over a low compression hole.

I believe you have bent valves or a broken valve spring. A compression test will not show a broken valve spring because the highest compression hole I had was the one with a broken intake valve spring.

Same shots problem on my engine. Click link and see videos as well as tear down:

Bringing 1993 Patch back from the dead...

As the engine is the problem rather than the Moose Call IP a separate build thread is in order. The discussion circled the drain pretty close for "parting it out" or selling as 'runs and drives' as - is. Only ONE thing saved it : I still own a Cumapart and need to send the turbo out for a...

www.thetruckstop.us

 

[MrMarty51]

Might try doing a cold engine compression test and see where that cylinder is at compared to the others, then a hot test too.
Could be such a thing that a lifter has gone haywire.

 

[MrMarty51]

AHHHhhhh, WW beat Me toooit. LOL

 

[FellowTraveler]

I'd try some seafoam on that.

 

[valyidol]

I install the another head.