This is a duplicate post from "internal engine modification".

I was doing some wot scans to email to a tuner to help with some idleing issues after a cam install. After a couple of runs, the truck began to emit smoke from the tailpipe. Also, there was alot knocking and rattling in the engine.

I had a cam installed about 2 months ago and this happened one time. Did not seem as bad the first time. The guy who installed the cam put some silicone around some of the (parts but can't remember). Anyway, after he did that, I did not have a problem until today. This time it seemed worse (lots of smoke and heavy knocking). I had to go to the dealer anyway to fix some minor bugs and when I got there, I checked my oil and there was none on the dipstick.

I am having them check things out. Anyone have a similar problem?

By the way, I had my stock pushrods replaced with hardened pushrods and springs changed to comp. 918's. And the cam specs are:
Duration at .05"
218/222
Intake valve lift - .564
Exhaust valve lift - .552
Lobe separation 112
Intake centerline 108
4 degrees advance

 

Bad seal somewhere - get a new mechanic!