Thermostat Question

J

jerseyboy1983

Petty Officer 2nd Class
Joined
Jul 3, 2012
Messages
105
Is it ok to put the water jacket covers back on without putting a thermostat in? I know on a car motor you can run your engine with no thermostat but is it ok for outboard motors? Just in case its needed, I have a 1985 Evinrude 150 HP. I assume it would be ok and that it would just take a bit longer for the engine to warm up but I just want to make sure.
 
kbait

kbait

Commander
Joined
Nov 13, 2007
Messages
2,449
Re: Thermostat Question

Your engine will run cooler than optimal, causing incomplete ignition, more easily fouled plugs, excessive carbon build-up, less mpg, etc. Your particular motor may have other issues w/o thermostat, depending on how the water was designed to flow through the powerhead to cool your motor.

You CAN run your motor w/o a thermostat, and I have done so to help diagnose water-flow issues, but I would DEFINITELY run the thermostat for normal use.

Good luck!
 
J

jerseyboy1983

Petty Officer 2nd Class
Joined
Jul 3, 2012
Messages
105
Re: Thermostat Question

lol Ok I will make sure and put new ones in. Thank you guys.
 
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