GT 40 Noise

[jschofiel]

Have a GT40 with 900 hours. After warming up and usually after a ski run a clicking noise sort of like two rocks clicking together begins in the area of circulation water pump. Click---Click---Click-----------Click ---Click------Click, a irregular regular noise. No squeel, and not at start up. Can't tell if water pump, alternator, or something in engine. Any ideas?

[brianc]

SOUNDS LIKE THE PUMP . HAVE YOU RESENTLY CHANCED YOU BELTS IF YOU HAVE IT MAY JUST BE THAT ONE BELT IS TIGHTER THEN THE OTHER I HAD THIS ON MY BOAT AND REDOING THE BELTS CURED IT ID TRY IT BEFORE CHANGING THE CIRULATION PUMP THE CLICKING NOISE IS THE BEARING INSIDE THE PUMP. MY BOAT HAD 1390 HOURS ON IT

[M3Fan]

Could be an exhaust leak at the manifold. That makes a distinct clicking noise. May want to break out the stethescope (sp). I'd put my money on that.

[surroundsound64]

I'd second the exhaust leak. If it's not that, it's probably a tappet sticking or something.

[Aarons01]

exhaust leak. check your exhaust gaskets