Motorcycle Repair: engine knocking, camshaft timing, different strokes

Question
HI mark i have a 94 1000 verago.pinpointed a knocking at top of rear cylynder.and the chain is tight in any stroke .what could the knocking be? is the chain suppose to be that tight? the front loosen's in different strokes .plus the back gets hotter then the front .any help would be appreciated  

Answer
Hi Bruce,

Q:  "...i have a 94 1000 verago.pinpointed a knocking at top of rear cylynder.and the chain is tight in any stroke .what could the knocking be?"


A:  Knocking may be caused by detonation, worn or defective piston/connecting rod, valve assy., or other.

The camshaft timing chain tensioner may be worn or defective.

A tech needs to inspect your Virago to accurately diagnose the cause.



Q:  "...is the chain suppose to be that tight? the front loosen's in different strokes .plus the back gets hotter then the front ."

A:  I supect a prblem with the timing chain, chain tensioner, and/or valve assy.

V-twin rear cylinders get hotter than front cylinders due to a lack of convection (air flow). The rear carburetor is usually jetted richer than the front to aid with cooling the rear cylinder.

Respectfully,
Mark Shively