timing chain fun

I think that is my best bet is to buy a new chain and pray that the cogs not toast and on top of that my valves aren't bent. Wizard thanks for the reply but I have ridden the bike before I tried to tune it. When it came to tuning, it backfires or something and throws it out of timing. I also made pretty damn sure that it was on after I received your first post. I have done the timing, started the bike and ridden it twice before trying to tune and then, fizzle.... Out of time. Have to order a new chain, will keep you posted. Thanks!

Popester
Xj650 81

 

The original chain should be good for 50,000 miles.
Do the "Lift-test" as recommended.

The Chain should be tight at the Bridge between the Cams.
If there is slack, ... do a Manual reset of the Tensioner.
Then test again.

 

Hi Rick,

the original km on the bike is unknown and I have tried resetting the tensioner many times and there was a little slack between the bridge. Not enough for me to worry about at the time but obviously should have. I have ordered a new chain and will have to wait a week upon install. Need a break from it anyway as doing the same thing over and over is insane.

Thanks for all the advice, will let you know my progress once installed.

Cheers,

Popester
Xj 650 81

 

Okay, better late than never. I replaced the timing chain. And because I did not do it sooner I had to replace a bent valve as well. Thank god that it was just one bent valve and not all of them. I have put it all back together and have been riding it for over a month and all is great. Bike runs better than ever.


Thanks for all the help.

Popester Xj650 81

 

Just to clear up this posting I will submit what I did to fix the problem.

Replaced the timing chain. Had to replace a valve because the chain was stretched, it bent only one valve. I was lucky. I lapped all the valves put it all back together and I have been riding it over the summer and it works like a charm. I also bought a colortune spark plug and adjusted all the fuel mixture and it runs better than ever. It took me about 20 minutes.

Thanks for all the help,

Jason