1977 mercury 700 water temp?

[BlairWhitney]

More issues so once again back to the people of iboats.(bless them all)
Have a 1977 merc. 70hp. Took it out earlier this year and ran terrible. Pulled the carbs and gave them a good cleaning. Had to replace the starter because I fried it. I can start it in a barrel but warm up lever has to be up to stay running.(carb adjust I think)
The thing that has me concerned is the temp of the water coming out the tell tale at idle. Very hot.(steaming). If I bring the idle up with the warm up lever it goes back to warm. Can a water pump be good enough to get flow, but not good enough to keep engine cool?

Thanks for any help or input,
Blair

 

[Chris1956]

Re: 1977 mercury 700 water temp?

That motor should run dead cold at idle. Sounds like it is time to rebuild the water pump. Did you do a link and synch, after the carb rebuild? Did you adjust the idle mixture screws?

 

[BlairWhitney]

Re: 1977 mercury 700 water temp?

link and synch? dont know what that is so answer is no. did not adjust mix screw yet, only has one for idle, waiting till i am on the water and in gear to do that. Time to get a manual i think. water pump shouldnt be to hard but would feel better with a manual close by.