Screwed up timing, I Think..

[royster]

Valve stem seals are the #1 reason why these trucks will burn oil at start up. If the smoking slowly stops after a cold start up, you can be sure it's valve seals. If it's all the time, it could be a valve guide has slipped out of place. Rings are the last thing to suspect.

Valve seals can be replaced without removing the head.

Your tests will indicate what the problem is.

[chaoticdopey]

Valve stem seals are the #1 reason why these trucks will burn oil at start up. If the smoking slowly stops after a cold start up, you can be sure it's valve seals. If it's all the time, it could be a valve guide has slipped out of place. Rings are the last thing to suspect.

Valve seals can be replaced without removing the head.

Your tests will indicate what the problem is.

This is how it runs..
https://youtu.be/rvbJlt2KAYw