UPDATE on Kodiak Won't Start when Engine Cools Off.
 

Reference Post: Not Just Cold, But Cool Start trouble

The '94 Kodiak has been at the dealer for 3 days with no results, except for the dealer charging me $200 to check the things I told him I had already checked.

They don't have a clue. The latest from the dealer is "You probably need a TOP END at $400". I know it's 15 years old, but it only has only 900 easy miles on it.

The compression is pretty high when it's warmed up. (170 psi) spec is 140 psi.
When engine is cool the compression reads 115 psi, well within specs.

I'm going to pull the head and check for carbon build up, but I still don't understand how it starts and idles like a champ when it's warm.

Any ideas that will save me $400 will be HIGHLY APPRECIATED.

Have you checked your valves?

I check the valve clearance and the dealer did as well.

I haven't pulled the head yet to check the valve seats.

Have you done a leak down test on it? I would do that before tearing it down.

EPI,

I didn't have the tools for the leak down test.

After your reply, I ask the dealer if they did a leak down test.

ANSWER: NO...uh..but we should have.

Just Dropped it off AGAIN to the dealer..

This is the only Yamaha Dealer within 80 miles, so I'm stuck.

Stay tuned...

I would also check to make sure they do a leak down cold and warm to have a comparison between the 2 since you are haven problems cold vs hot.