Tohatsu m40c cooling

L

lance cpl

Recruit
Joined
Nov 21, 2011
Messages
1
Hi, i have an m40c which seems to be pumping a lot of water through the exhaust from start up, i have replaced the thermostat and gasket but i don't think the engine is getting up to temperature,i have not worked much with Tohatsu but have some experience with other engines which only pump through exhaust when the thermostat opens, any help would be appreciated.
 
pvanv

pvanv

Admiral
Joined
Apr 20, 2008
Messages
6,509
Re: Tohatsu m40c cooling

That's normal. The stat just restricts flow through the head/block when the motor is cold. You can check for proper operating temp either with a cheap IR gun (from home depot, etc.), or with temp crayons.
 
E

elong0916

Cadet
Joined
Jul 31, 2013
Messages
9
Re: Tohatsu m40c cooling

I also question the amount of water that is coming out of the exhaust relief ports, I think on mine though it is not enough.
This engine does not have a indicator hose, does yours stream water?
Mine just sort of trickles out at a fast idle.
 
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