water leak

bdarbyups

Cadet
Joined
Aug 3, 2009
Messages
9
engine starts and water is coming out of the thermostat wire next to # 1 spark plug, is that a replacable part?

Sorry the motor is a 1990 Merc 40hp 4cylinder SN OC225906
 
Last edited:

Barnacle_Bill

Admiral
Joined
Feb 8, 2004
Messages
6,469
Re: water leak

Sounds like that might be the heat sensor which is replaceable. Always tell us the motor specs so we know exactly what you are referring. to.
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,930
Re: water leak

If its the crossflow 40,that is the water jacket gasket and yes its replaceable and replacement part # is 27-856729. If its the looper 2 cylinder the casting is cracked as water jacket is molded on to block.
 
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