I look at the fiche and some pics of cylinders on eBay and it looks like there are metal sleeves that extend down from the cooling fins into the crankcase. Are these steel sleeves and can they crack?
My problem is the bike bogs down when giving it throttle. Thinking it was the carbs I rebuilt them. Nope, not it.
Noticed the headgasket had very very slight leak where it meets the cylinder. Spray carb cleaner on that area bike ran great. Filled that area with high heat exhaust sealant (just to see). Motor still bogged. That's not it.
Sprayed carb cleaner on cylinder #2 (close to cam chain, between #2 & #3 cylinders) below intakes and head gasket, bike ran great.
This is what leads me to believe it's a cracked cylinder, but if it has a steel sleeve inside, how could the cleaner get through to the combustion chamber?
Cracked head maybe? But we didn't spray the heads.
What do you guys think?
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