ka-chunk? Uh-oh

my 2000 YZ125 does that when i rebuild it i think it is just the lack of oil on the pwervalves which causes it to slap at the compresion stroke when it stops, i have had no probs with mine after run in.

when I put the EG144 kit in the CR I used to have I started it up after replacing every major part in the engine (to the tune of $1500 :scream: ) and I started it, sounded beautiful until it went eeeurp and was once piece, after only 30 seconds of running I thought it was junk, so I started to pull it all back apart and found that the primary gear had came loose because I didn't loctite it :| I know this doesn't help you any but I find my stupidity humorous now :)