This makes NO since at all too me!!!!

[Mark523]

I replace the impeller on my 1967 Evinrude Big Twin 40 Hp and I had no water coming out of the exhaust relief hole on the rear of the midsection. I have always had a little bit coming out there before the service. I removed the thermostat and housing and started the engine and water was coming out of the thermostat hole. So I replaced the thermostat and reinstalled the housing and tried again but still no water coming out the exhaust relief hole and the head was unquestionably getting hot. I also blew the water passage lines out with compressed air before reinstalling the thermostat. Please HELP!!!!!!!!!!!!!

Thanks,
Mark

 

[tashasdaddy]

Re: This makes NO since at all too me!!!!

did you try it with out the thermostat? stat could be bad.

 

[Mark523]

Re: This makes NO since at all too me!!!!

did you try it with out the thermostat? stat could be bad.

Yes, I replaced the thermostat.

 

[Mark523]

Re: This makes NO since at all too me!!!!

did you try it with out the thermostat? stat could be bad.

I meat to say that although I replaced the thermostat I have not tried it with out it.

 

[NDSSS]

Re: This makes NO since at all too me!!!!

You could have pushd the water tube too far into the
engine block and plugged the opening.
I have had this happen to me.

 

[ezeke]

Re: This makes NO since at all too me!!!!

Check the water tubes at the water pump again. The rubber seals called "water tube grommets" can get pushed down and restrict the water flow.

Make sure that the impeller housing plate under the impeller is sealed so that air cannot get in.

Finally, check the drive shaft seal at the top of the impeller housing. I think it is an 'O' ring outside and a shaft seal inside on your motor.

 

[tiller7104]

Re: This makes NO since at all too me!!!!

Recheck youri mpeller install, I am not aq betting man but I bet you missed something? Take it apart and check it.....I know it is a pain in the butt, better safe then sorry.

 

[itstippy]

Re: This makes NO since at all too me!!!!

"I removed the thermostat and housing and started the engine and water was coming out of the thermostat hole."

When you pulled the cover off the thermostat and removed the thermostat and started the motor did you have lots of water coming out of the (open) thermostat cover? If you had a nice "gusher" going then you needn't redo everything down below; you're pumping water fine. If you don't have lots of water then your impeller replacement needs redoing.