Registered Forum User
GTL
Bikes: ST4s ABS
Posts: 480
Join Date: Aug 2003
Location: Tayside, Scotland
It is either running very lean (might be a sticking or partly clogged injector) or the igntion timing is far too retarded. Long term will result in a burnt exhaust valve and/or piston damage.
Forget it and look somewhere else that has a mechanic that knows what he's talking about.
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