Hi, today I did a complete check in my motorcycle to verify the reason of the backfire through the carburetor.
After a long check, I realized that the iridium spark plugs were just black.
At first I thought that the backfired should be caused by a lean mixture, so I have closed the low speed needle clockwise and turned back three clicks up....but then if the spark plugs are black, this means that the mixture was too rich?
I am puzzled...any help?
What I did was to replace the spark plugs and tun the low speed needle to three clicks up, nothing else. Now the motorcycle starts easy and there are no flames any more.
Anyone could help me to understand what happened and what should I do?
Thank you!
Ed
After a long check, I realized that the iridium spark plugs were just black.
At first I thought that the backfired should be caused by a lean mixture, so I have closed the low speed needle clockwise and turned back three clicks up....but then if the spark plugs are black, this means that the mixture was too rich?
I am puzzled...any help?
What I did was to replace the spark plugs and tun the low speed needle to three clicks up, nothing else. Now the motorcycle starts easy and there are no flames any more.
Anyone could help me to understand what happened and what should I do?
Thank you!
Ed
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