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Hello,

Yesterday , I cleaned the idle jet and the fuel filter in my right kadron and after installation and noticed the number 1,2 cylinder carb is making a weaseling [sp?] sound like sssssssss and this is first time since 5 months. So guys what do u think the problem is?

In the same time there was little backfire through the exhaust. Does that mean that I have a rich mixture?

Thanks.

Backfiring usually means it's lean. Could also be a timing problem. Since you worked on the carb you might have left something loose and created a vacuum leak. Check for that first.