I'll just get right into it....
Got the ATC from my pops after it had been sitting in a garage for about 10 years. My uncle (his brother) in a drunken rage launched the thing into a reservoir thinking it was funny. I worked afterwards but it's had issues ever since then.
First thing I did was rebuild the carb. That's when I noticed it had a 71 Honda CT90 carb on it. Ordered the correct one from ebay and slapped it on. Still won't turn.
Then I checked the spark plug. The gap was set at .040 so I adjusted it to .025 and still won't turn. Sprayed carb cleaner in the hole, replaced spark plug and not even a pop!
Took the CDI unit apart and cleaned all the parts to be sure it was functioning properly. There was a lot of what looked like calcium but got it all cleaned out. Still won't turn.
Got a compression gauge and found out it has 0 psi now. It had compression before I started working on it so I ordered new gaskets for the pieces I worked on and a new spark plug just incase it was the wrong one.
Now... I tried to do a value adjustment but had no idea what I was doing and I think that may have messed with the compression.
I'm wondering if I should rebuild the cylinder head? Would this be a better way to adjust the valves? Any other ideas what the problem could be? I don't wanna rip this thing apart if I don't need to.
Thank you for your time and assistance.....