Mercruiser 3.0 won't go over 2000 rpms under load

Kevinboling

Recruit
Joined
Jul 26, 2020
Messages
4
2001 Mercruiser with Alpha 1 Gen 2 sterndrive. Recently hit rock with skeg and had to replace lower unit. After replacing lower unit, motor will not go over 2000rpm. I set timing changed fuel filter, drained tank and refilled, removed and cleaned carburetor, and removed and checked upper unit.

Any ideas or suggestions?
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,307
Ayuh,...... Welcome Aboard,...... How did the motor react to the impact,..??
 

Kevinboling

Recruit
Joined
Jul 26, 2020
Messages
4
I shut it down immediately and did not restart until after I replaced lower unit. It was a significant impact. It ripped the skeg right off and part of the shaft housing. The propeller jammed up against the annode.
 

Triangleboater

Petty Officer 1st Class
Joined
Mar 5, 2013
Messages
207
Is it a new prop? if the skeg tore off and the prop got jammed I would assume you would need a new prop too. If it's the same prop, I would switch that and take her out. Often even if the prop looks ok to the naked eye , it isn't after impact.
 
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