Popping Noise in 2 stroke Exhaust

BM
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34
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11/8/2016
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CA
BM
I am trouble shooting this problem on my 86 CR250 . After recently replacing the stock silencer with an FMF Spark Arrestor and Boyesen reeds . I am getting a popping sound in the exhaust pipe at low rpm upon deceleration. I have the Keihin PJ set to the factory specs with a 60 slow jet and a 175 main. Needle in the 3d position. I am thinking its a rich setting on the pilot and should go to a 55. Any suggestions would be great Thanks
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crf250pilot
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4/1/2008
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Manning, OR US
crf250pilot 5/31/2017 7:01pm
5/31/2017 7:01pm Edited Date/Time 5/31/2017 7:01pm
Popping on decel is usually a lean condition. Might have a bad seal on the boyesen reed cage. I'd silicon both sides of gasket on reeds if the jetting seems right.
rancor19
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10/15/2016
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Springfield, OR US
rancor19 5/31/2017 7:50pm
5/31/2017 7:50pm Edited Date/Time 5/31/2017 7:51pm
How many coats of paint are on the pipe?

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