Dry exaust

[milemarker161]

My names Mike,I have a 1986 John.9.9. I just rebulit the power head on a newley acguried Sailmaster because the previous owner toasted it. I went through the cooling system and cleared it. New thermastat, new impeler, new copper water tube to power head. I started enging first time in tank got plenty of water to pee hole, but none from upper exaust hole. So put on water hose and got none from lower exaust.When I hold my finger over pee hole I get water spray from exaust. When I take it off it stops I also get a stream of water from a hole on the lower unit port side

 

[12Footer]

Re: Dry exaust

Not sure from here,Mike...But it is acting like a sticky t-stat. The thermostat may not be the right one, or not opening when at the proper heat. Run the engine 5 minutes while monitoring the telltale water temp with your hand. It should open when the temp gets almost too hot to place your hand in.<br />I hope this is the problem anyway.

 

[milemarker161]

Re: Dry exaust

I thank you for the advise, I will run it a little longer an watch the temp, and also i'm going to replace the pump houseing, It looks good but it elimenates one more thing. i'll let you know when i find it. thanks again.

 

[12Footer]

Re: Dry exaust

Most housings have a teflon coating on them. As long as the underlying aluminum is not pitted badly, it should be fine. But you are correct that the housing can devour a new impeller if it is in bad shape.<br />Ither way, replace the impeller regardless of the old one's condition. If thew old one looks pretty good, go ahead and keep it in the repair box for a spare.<br />Like someone here said last week (don't rmembr who), " Impellers look fine until they fail".

 

[milemarker161]

Re: Dry exaust

Thanks for the replies, I went back to the the t-stat an took a hard look at it, turns out that its opening fine, I just was being to cautious and was not letting it warm up enough to open. thanks again.