1982 XS650 Heritage Special - Decel popping on one cylinder

fenbrancis

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Alright on the compression test.

Valves are set correct but will check for leak down.

Starting to find myself at a loss, carbs looked fine. The right plug is lean, the right tail pipe is starting to yellow, and it decel pops so loud it’s annoying to ride.

Left side everything is good, if anything a little rich. Bike runs strong.
 

jpdevol

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Hmmm....so possible causes of your symptom from most to least likely:

clogged pilot circuit
air leak at intake
valve leak
head gasket leak
lean float height

Other possibilities more remote
 

fenbrancis

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I’m thinking it’s got to be a carb issue in the pilot circuit.

I just sprayed starter fluid all over I mean all over the intake boots, choke slide, and carb and no change.
 
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