Yesterday my kid and I went to our local mx track. He just sold his lil CRF150 and hasn't found it's replacement. I took three "grandpa" laps on my WR and came back to the pit. (I'm an old dez rider, so jumping ain't really my thing). Jr had a long look on his face cuz watching pops ride ain't fun, so I handed my WR over to him. He made four laps, barely clearing the jumps and just putting along. Next thing you know, bike stalls. I thought maybe getting low on fuel, put on reserve and set kicker at TDC. Pulled decomp and kicker stopped again. Hmmmm. Something ain't right! Tried a few more times and no fire. No crunchy sounds from downstairs but kicker stops unless decomp lever is in.
Rolled it into the pits, loaded up, brought her home.
Tonight: Pulled off cam cover and spark plug. Timing chain is broken. Gently cycled kicker and piston sounds intact. Flywheel rolling right along. No crunchy noises.
What next? I've rebuilt a buddies old KLX300 (PITA POS!) so I have a general idea about putting on a new chain, but my big concerns are deeper than that.
Ideas? Thoughts? What to look for? I had already purchased a full gasket kit as one of the lower gaskets was weeping, but was gonna wait for winter project. Should I just pull the head and get it over with?
Jim in AK
Edited by marbee40, July 18, 2012 - 09:31 PM.