Merc high temp alarm?

[phatdaddy]

i would suggest checking the poppet valve on the side of the lower block, also you mentioned you changed a water pump. did you just do the impellor and not the housing? also t stats are a common problem. just hang in there, the real mechanics will be along................

man spare, you are a faster typer than i am great minds think alike.

[dbetterred]

I replaced the impeller and the bucket it comes in but not the plastic housing. I thought it looked straight... I might half to pull off the lower again to check.

Never heard of a poppet valve. what is it? what does it do? I'll look in manual after work and check it out.

I thought of the t-stats also, but wouldn't they stop the pee stream if they closed up? They are easy and pretty cheap. I'll get them anyway.

Thanks for the quick response!

[dbetterred]

I looked up the poppet valve and that made sense with the overheat symptoms. I pulled it off and it looks good. Disasembled and cleaned it and will reinstall when I get gaskets. I won't know for sure until I run it but that doesn't look like the problem.

Looks like I'm pulling the lower unit back off.

ordered t-stats also.

[dbetterred]

I may not have to pull lower off after all.
Pulled thermostats out (broke one bolt...) and they were super crusty and rusty!
Looks like this may have been the problem. Fingers crossed!