Dead Yamaha--338cc

Dead Yamaha--338cc

Post by Mountainma » Sun, 21 Feb 1999 04:00:00


My 1988 excel Yamaha just died yesterday..... I suspected a piston or
something cause it stopped at 50 mph.  I checked compression and got 125 psi
in the left cylinder, but only 30 psi in the right cylinder...... Does
anyone out there know what that means?..... Hole in piston?  Rings?  HELP
!!!!!!
 
 
 

Dead Yamaha--338cc

Post by Magnus S?derber » Sun, 21 Feb 1999 04:00:00

Quote:

> My 1988 excel Yamaha just died yesterday..... I suspected a piston or
> something cause it stopped at 50 mph.  I checked compression and got 125 psi
> in the left cylinder, but only 30 psi in the right cylinder...... Does
> anyone out there know what that means?..... Hole in piston?  Rings?  HELP
> !!!!!!

It seems like the rings have been melted into the piston, causing poor
cmpression.