01 yamaha lost #2 cylinder

A Bite · #1 October 12th, 2006, 07:59 PM

The other day boat began to run bad.Burnt #2 plug pretty bad.There was I thought carbon build up on on plug but now im thinking it was peices of metal seized to it.I have very little compression on that cylinder with a metal to metal grinding noise every so often turning the fly wheel by hand.Took a flash light looked in cylinder noticed piston was pitted with some peices of metal behind cylinder wall. I know its trashed just want to know what may have caused this.Alarms worked a month ago but this time no buzzer alarmed at all. Thanks if you have any info.

A Bite · #2 October 12th, 2006, 08:01 PM

sorry its a 60 horse 2 stroke

JUSTINTIME · #3 October 12th, 2006, 08:14 PM

u need to dissemble the motor to find out
could be rings, bearings

A Bite · #4 October 12th, 2006, 08:30 PM

Im sure it is rings or bearings just wondering if it over heated or maybe lack of oil not sure.just kind of puzzeled because motor ran great and in a matter of seconds its crap.

A Bite · #5 October 13th, 2006, 08:46 AM

I guess Its time for a evinrude e-tec.

Ray Neudecker · #6 October 13th, 2006, 08:47 AM

With out an alarm going off, best guess would be a fuel restriction. Dissassembly will be necessaryu to determne the cause.