Quote Originally Posted by royster View Post
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.
Might as well change the valve stem seals while im doing this maintanence, is there a right-up on how to do it with the head still on?

Quote Originally Posted by geezer101 View Post
I thought it sounded pretty noisy. Have you performed an oil engine flush on this engine before? It might go a long way to quietening the hydraulic tappets and cleaning out build up on the rings (bit of fuel system additive would help too). Use good quality valve stem seals like Felpro and they will last longer and seal better.
No i have not flushes the engine, i was thinking about dumping a bottle of seafoam down the intake to clean the vales, ive watched a youtube video of letting it sit for some time with the liquid sitting on the pistons to completley clean the cylinders, of course i will remove all 4 spark plugs so i do not hydrolock the motor, i did send my boroscope camera into the number 1 cylinder and saw alot of buildup on the valves, so this should clean them..
Heres a video of the results from youtube https://www.youtube.com/watch?v=u6UeJXkzDW8
Quote Originally Posted by pennyman1 View Post
not a good idea to run engine oil flush on a high mile vehicle - it will clean it all right, then every worn part of the motor will make so much noise you will think it is going to explode. Use 1 quart of Rislone or Lucas oil fortifier instead to slowly clean out the motor.
After i seafoam it should i put 20-50 generic oil with a quart of lucus?