Possibles:blocked exhaust, head gasket incorrect / mating surfaces not perfect (check with steel rule & thinest feeler guague), throttle cable stretched (renew), dirty fuel [clean all lines, tank, renew filter(s)], renew spark plug. Can anything affect the timing? Clean all earths. Start with easiest task. Make checklist.
All the best!
Nortim
February 2009
howtomendit.com for free repair help, information and advice.
