T-Stats on 90Hp

[fishhawk16]

I have a 1996 90Hp (Model E90ELEDR). TOday, after a bit of water skiing I pulled the cover off the motor to check temperature on each cylinder bank. I noticed the port side was hardly even warm, the starboard side was hot, I could place my finders on the head but could hold them there but it was hot. <br /><br />I’m assuming that the port side thermostat is gone, right? How hard are they to replace on my own? <br /><br />When looking at the back of the motor are they behind the black plugs above the spark plugs?

 

[marinemech]

Re: T-Stats on 90Hp

thats where they are just undo the black plastic cover and the thermostat will come out you may be able to clean it out and reinstall

 

[fishhawk16]

Re: T-Stats on 90Hp

Thanks marinemech,<br /><br />Any special seals, or sealant needed?<br /><br />BTW would this also cause engine to run a little rough when its warm?

 

[DHPMARINE]

Re: T-Stats on 90Hp

As an aside,starboard cyinders will always be 'warmer' due to the circulation of water thru the engine.<br />DHP

 

[fishhawk16]

Re: T-Stats on 90Hp

Thanks DHP,<br /><br />Pulled them out today and tested them they appear to be working fine. <br /><br />Is there any sealant that is needed to replace them I noticed that there was something on the threads before.<br /><br />Sorry if the above questions are dumb but I just purchased this boat and never owned a v4 Evinrude before.

 

[marinemech]

Re: T-Stats on 90Hp

no sealant required but if you use gasket sealing compound on screw thread it helps