I am stumped on my bike. Keeping this post as short as I can, my bike starts right up, all 4 cylinders are running, goes good, real zippy.
Once she gets warm, after about 5 minutes, it jumps around between running real poor and running normal. But mostly running real poor. I almost think that sometimes it is running on 2 cylinders just because it seems to lose all power, and really bogs, not to mention that it will stall if at an idle.... but then it will idle normal for a bit..... and then idle horribly and not rev without bogging. So I am lost because it doesn't just run bad when it is warm, it bounces back and forth between good and bad. Any ideas? Can this be some sort of vapor lock or fuel starvation issue? And I really suspect that maybe at the bad times, only 2 cylinders are firing(since the loss in power)... but how would I check for that since all 4 fire when it is cold?
Finally, if it where the valve clearance or something, wouldn't it just run bad the whole time it is warm, not randomly?
thanks
~one last little comment that might help someone understand..... when it is warm, and if I have a moment it is running good, I will open the throttle evenly, and it will zip for 1-2 seconds and then almost toss me over the handle bars when as it second guesses itself and bogs, and then will zip... bog...zip... bog....
And I get backfires when going downhill or coasting to a stop in gear.
Post edited by: b4schroer, at: 2006/07/23 20:11