Engine Trouble Chronic 4-stroking

[Deleted member 12676]

http://www.dragonfly75.com/motorbike/4stroking.html

 

[PeterG]

FIXED!

Cut apart the exhaust, punched out the palladium core, welded the sucker back together, and she goes like stink.

It appears the exhaust was malformed from birth. The passage at the top of the palladium canister was only about 1/2" in diameter.

Thanks everyone for helping to diagnose this difficult problem.

Cheers,

Peter.