Leading up to these problems the bike was running fine just could tell it needed plugs. So today i chaged the plugs and replaced them with the ones listed in the owners manual. hit the idle adjustment a little and threw it off. so took about 10 mins and got it idling good. butttt heres the problems now


Sound has drasticly changed, a lot lower tone, reminds me of my old ninja 500..

try to take off and its VERRYYYY sluggish spitting and sputtering and when it gets close to cutting off it will backfire through the exhaust, and also once right when you try to restart it.

All plugs should be firing as it runs smooth.

I have two guesses, maybe the splash of 87 octane i put in it because she was bone dry.

air box lid looks like it could be leaking a little air.

any input would be highly appreciated, i was planning on taking it to the drag strip tomorrow... but its not looking too good now.

 

Before video.. http://vids.myspace.com/index.cfm?fu...deoid=60557428


now after...

http://vids.myspace.com/index.cfm?fu...deoid=60557485

 

your cam timing might have jumped (timimg chain)

do you have a Manual cam chain tensioner or is it still stock?

 

its still stock as far as i know.



i have now narrowed it down to a fuel problem. all wires are sending spark and good and correctly gapped plaugs are being used.

i can crank it and pull the two right side plugs (sitting on the bike) and no change in sound or idle. but squirt a bit of carb cleaner in each carb and idle goes up (wires on the plugs of course) so im thinking maybe fuel filter?

 

well...usually when stuff like this happens it is the result of something caused by the tinkering done right before the problem started.

I would try putting the old plugs back in, double checking you have the right leads on the right plugs, etc...

If you turn the idle down too much it will cause issues when leaving the line because the carbs go lean when you start to take it off idle and then choke out a little as the fuel gets dumped in.

KongBastard

 

hit the idle adjustment a little and threw it off.... what does that mean exactly.
If it ran OK and then you tinkered with it then I totally agree with prior post. What exactly did you do to change things?

 

What did you gap the plugs at?

 

It sounds like you have the plug wires on wrong. Check and make sure that each plug wire iI going to the correct cylinder, i think you may have switched the 2 on the right side.

 

Agree with this or it may be that you didn't push the plug wire down far enough. Are they stock wires or aftermarket?

KongBastard

 

yes, you put your wires in mixed up...