DrewDidIt
XS650 New Member
Hello,
First time posting here.
I have a 1978 XS650 I bought a couple months ago. It was very neglected. I replaced the camchain, seals, rings, fixed carb float, synced carbs, etc. And the thing was running cherry. About 250 miles after the overhaul, I was going about 50 mph and gave it a little gas to get around a car. Just then both caps for syncing the carbs (the ones coming out of the rubber boots that fit the carbs to the engine) blew off, the engine stopped running, and was backfiring until I came to a stop.
The 10 mm nut had come off that holds the timing advance together. It looks as if the whole timing advance unit may have rotated a bit aswell. The keeper pin for the unit i thought used to be in a different location then before. Up near the top (its near the bottom now)
Now the timing is all screwed up and it just backfires when Im trying to start it.
The cam chain is still intact and everything seems to be mechanically working.
How to I tell if it was a slipping cam chain from not setting the tensioner right, or if it might be something in the advance housing where the keeper pin goes.
Please Help!
First time posting here.
I have a 1978 XS650 I bought a couple months ago. It was very neglected. I replaced the camchain, seals, rings, fixed carb float, synced carbs, etc. And the thing was running cherry. About 250 miles after the overhaul, I was going about 50 mph and gave it a little gas to get around a car. Just then both caps for syncing the carbs (the ones coming out of the rubber boots that fit the carbs to the engine) blew off, the engine stopped running, and was backfiring until I came to a stop.
The 10 mm nut had come off that holds the timing advance together. It looks as if the whole timing advance unit may have rotated a bit aswell. The keeper pin for the unit i thought used to be in a different location then before. Up near the top (its near the bottom now)
Now the timing is all screwed up and it just backfires when Im trying to start it.
The cam chain is still intact and everything seems to be mechanically working.
How to I tell if it was a slipping cam chain from not setting the tensioner right, or if it might be something in the advance housing where the keeper pin goes.
Please Help!
