2002 Mercruiser 4.3 MPI Belt Makes Noise and Looks Off Track(By water pump pulley)

diver94

Petty Officer 2nd Class
Joined
Jun 7, 2010
Messages
191
Hello,

I have a 2003 Regal Comodore with twin 2002 Mercuisers 4.3 MPI (Bravo 3). I just noticed that my port engine is making make a noise. It comes from the belt. It seems like the water pump pulley is not turning straight. The belt seems fine (I fully inspected it).
Its a raw water intake. The water pump for that engine was replaced in May (just the housing and impeller). However, the shaft could be acting up. Please see link below; uploaded a video to YouTube today.

https://youtu.be/QaDWUa4EwPI

Thanks,
Lui
 
Last edited:

GA_Boater

Honorary Moderator Emeritus
Joined
May 24, 2011
Messages
49,038
A 7 second video from a 3/4 view doesn't show anything.

Loosen the belt and see if the pulley is lose or has play. Is the pump leaking or weeping?
 

diver94

Petty Officer 2nd Class
Joined
Jun 7, 2010
Messages
191
No leaks no weeping. Just off track.. I will replace the pulley.Tks!
 

diver94

Petty Officer 2nd Class
Joined
Jun 7, 2010
Messages
191
A 7 second video from a 3/4 view doesn't show anything.

Loosen the belt and see if the pulley is lose or has play. Is the pump leaking or weeping?


Problem fixed. Removed the belt, inspected all pulleys (they were fine). Re-installed the belt and GTG. I guess the belt just came out of alignment.
THANKS!
 
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