mechanic says motor is smoked.spark plugs on #5 were closed shut.can rebuild but will not gurantee he said suzuki will not explain why its happening.similar problems to other motors.has anybody experienced similar?:helpsmilie:
Find another mechanic, it's either inherent in the design or a catastrophic failure mode associated with age/use. From your post it seems to be a somewhat common problem so it shouldn't be too hard to find the answer. Check different brands of sparkplugs for length or try going with a little colder plug that won't sit as deep in the combustion chamber.