1987 50hp Evinrude E50TLCUD Thermostat Replacement

[FishAtFive]

The problem of it idling poorly after warming up has never went away and no matter what I've replaced/rebuilt the problem persists and frankly I am just done with it. This weekend I am pretty sure it got stuck closed because it lost all accelleration and the temp alarm went off. So here we go.

I'm going in, wish me luck. Will post updates here.

 

[racerone]

I see anew 4 stroke soon.

 

[FishAtFive]

I see anew 4 stroke soon.

Not even an option, the previous owner did a **** poor job on a through hull and the transom rot is up to one of the four mounting bolts.

 

[racerone]

Did you ever post the actual compression values on this motor?

 

[FishAtFive]

Did you ever post the actual compression values on this motor?

I believe so. If I recall correctly they were between 140 and 150 and +-10% of each other. I checked twice, when I first started working on it and after the last time it overheated. Disclaimer: crappy amazon tester used.

 

[FishAtFive]

All 14 bolts are turning except this middle one. I can see the head turning but springing back, which means it's not actually turning. I think I learned that from a Joe Reeves video. Got PB on it and now I wait.

 

[FishAtFive]

Got the last one out! Had it soaking in PB for about two days, plenty of light tapping with the hammer, and then I put some heat on it and came back a few hours later and it slowly came out. I'll take the head cover off tomorrow. I really hope to find the thermostat is indeed shot.