Scag sthm engine eating oil

[ILENGINE]

Changing the head gasket will not effect timing. but without pressure on the lifters, and the engine is turned over for some reason like going from TDC to BDC can push oil into the lifters and prevent the valves from closing.

Had a customer a few years ago that was using 30w in the single Command engine, and after running for a few minutes would stop running. Wait a few hours and would start back up. The Command normally calls for a multigrade oil and the straight grade was allowing the lifters to overfill and hold the valves open. I have seen where push rods would get bent from trying to turn the engine over without collapsing the lifters before trying to start.

I normally will remove the lifters and collapse them by wrapping in a clean rag, and inserting a small socket in the open end and putting the whole thing in a vise.

 

[Morson82]

Tried starting it this afternoon and she would start to crank over and then stop and then start to crank and then stop. I will try to get a video of it tomorrow. So what ur saying is that I might have to take everything I just did, back part, remove the hydro lifters, bleed them and then put it back together?!:mur::mur::mur::mur::mur::mur::mur::mur::mur:

 

[ILENGINE]

It sounds like a compression release problem. I would say at this point the lifters have bleed off and are no longer the problem, unless you bent the pushrods.

 

[Morson82]

Tried to start the engine after work today, no luck. I took video. Let me know what you think.

 

[Morson82]

This one is if the repaired head with the vale cover removed and showing the movement of the valves

 

[ILENGINE]

Video set to private, can't view

 

[Morson82]

Unlocked the videos

 

[ILENGINE]

I acts is if the timing is off. Trying to fire too soon.

 

[Morson82]

I have a leak down tester I'm going to use this afternoon. Whatever the out is, I know I'm going to have to remove the head again. What is the fix here? I don't understand how the timing got screwed up. Was it something I did when I put the head back on? The valves and lifters aren't adjustable and I didn't touch the inerds, so shat gives?

 

[ILENGINE]

I don't think it has anything to do with the head that you worked on. Whatever is causing the problems is effecting both cylinders. Maybe the timing isn't off as much as something goofy with the firing of the plugs. Does this engine have the spark advance system. maybe something messed up with it.