exhaust coming out riser???

thundercat 9

Seaman
Joined
Oct 8, 2007
Messages
68
Hey Guys'


I just put my 350 merc motor back in the boat(after replacing the starboard head) and was doing some testing just to make sure that it ran cool. I checked the flow diagrams and all my hoses are on right.
I pulled off the hose between the T-stat housing and the riser...should there be any kind of pressure coming out of the riser when the motor is idling? I don't want to get out on the water and overheat... I am doing my testing with the outdrive submerged in a plastic 45 gallon drum laid on it's side(the water inlet is under water).
What is the purpose of the plastic balls(check valve) located in the t-stat housing? Should water be coming out there?
I am getting sporatic readings on my temp gauges.

Any info would be greatly appreciated.

thanks
jeff
 
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