Maintenance & Technical > KX500 Original

Keep fouling plugs

<< < (2/4) > >>

5dracing:
One other thing to think about is the quality of the gas.  How old is it? I have a mechanic that just got back from a small engine repair training and they stated that gasoline is only maintaining its octane rating for about 2-3 weeks.

Brett:
Previously the bike hauled arse, so something has definately happened and is not just jetting.  I will rip the carby off and double check for something obvious like float split and full of fuel and i'll rip the magneto off to see if it has slipped a bit.
Other than that i do not know how or what the specs are for resistance in coil to see if that isn't weak.

Spider:
Before I went to all that trouble I'd go with a fresh batch of fuel paying attention to the mix ratio. I put oil in the can then went to the station and put oil in with the gas. What a smoking mess. I couldn't figure out what was wrong until my buddy asked what happened to all the oil we had.

Brett:
Na its not the fuel cos i checked fuel flow from tank and drained that and mixed up a fresh batch.
Today i figured out that if i didn't give it throttle i could ride it happily (1/3 throttle) but if any more it would misfire.  Then i stopped riding and in neutral if i slowly increased rpm it would splutter at 1/3 throttle and die if any more.  I tried 2 other coils and it still splutters when increasing throttle slowly.
I reckon it must be black box or pickup coil half stuffed what do youze reckon??

gowen:
Post up a picture of the plug, I can easily diagnose a plug. But, from what you are saying. Any smoke when more than 1/3 throttle? I have a hard time considering a CDI because usally it does not foul the plug. Just runs like crap. I doubt the ignition because it would not start easily or at all. But I could be wrong. Give a plug condition. They do not foul for no reason. Check your ignition position. It might have moved.

Navigation

[0] Message Index

[#] Next page

[*] Previous page