30 knocking sound

[trose12379]

"i have a 1988 rinker w/a 3.0

"i have a 1988 rinker w/a 3.0 130hp mercruiser, it has 240hrs. i have a knocking/ticking sound that i hear very loudly once i get past 2900 or so rpms. i don't hear it at idle. thanks"

 

[kainon]

"Could be a few things, flywhe

"Could be a few things, flywheel loose or cracked, u-joints, piston slapping the crank or head, bad lifter(s) bad rod bearing, Timing chain stretched and slapping, water pump bearings."