Mercruiser 888 fresh water pump

CEnsming1973

Recruit
Joined
Jun 7, 2012
Messages
2
Hi all

I'm new to this boating stuff. I purchased a 73 sea ray from my brother. It has a 351W mated to a mercruiser 888 outdrive. I was just wondering if the boat has to be in forward for the pump to actually pull water into the engine. Curently when I put muffs on or put outdrive in 55 gal drum it dosnt pull any water into engine. (In neutral) My brother stated he had the same problem but when he's out on the water no problems. So I'm just confused on weather or not I have a problem or just not testing it correctly. I just dont want to get out in the water and overheat.
 

stonyloam

Vice Admiral
Joined
Mar 13, 2009
Messages
5,827
Re: Mercruiser 888 fresh water pump

It should pump any time the engine is running, whether in gear or not.
 

CEnsming1973

Recruit
Joined
Jun 7, 2012
Messages
2
Re: Mercruiser 888 fresh water pump

Thank you so I'm assuming the pump is bad. Thanks for the info.
 

kato14709

Cadet
Joined
Sep 28, 2011
Messages
16
Re: Mercruiser 888 fresh water pump

Have you replaced the impeller in the water pump in the lower unit?
 

haulnazz15

Captain
Joined
Mar 9, 2009
Messages
3,720
Re: Mercruiser 888 fresh water pump

Sounds like the impeller/water pump in the outdrive needs to be replaced.
 
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