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New guy needs some help, having some inboard motor issues with my 1989 mercruiser 5.7l ski motor

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Colvin0351

New member
Hi, I just bought my first boat and I am having some issues. I have a 1989 Dixie 299 with a Mercruiser 5.7l ski inboard. My transmission cooling assembly was leaking raw water into the bilge so I took it off, patched it and reinstalled. When I went to take it out the patch held but the cooler assembly is now very warm to the touch. When it leaked water it was generally cool to the touch. Is this normal? Also, after warming up I pulled a skier around for about 10 minutes, the motor ran fine until I powered off and came around to get my skier. It bogged down and stalled, that is when I noticed the transmission cooler assembly was warm. But I believe the stall wAs due to a flooded carb. The engine compartment smelled like gas and I could see some over flow on the manifold. If any of this makes sense to you please pass on some info. ARE THEY CONNECTED? Or is it just bad luck?
 
My main question is the tranny oil cooler, it ran cold before the patch and now runs warm. What's the normal operating temp? The cooling system is still functional, my headers are not burning hot and my temp gauge reads about 165 - 170.
 
You have a mechanical fuel pump ? Maybe the rubber went. Shoots fuel back up the yellow hose to the carb. That yellow hose is supposed to be clear.

Maybe you have other issues with the cooling. Maybe the risers are clogged? Maybe the impeller went or you sucked something up the intake. Maybe the flappers went. Or maybe just maybe the exchanger gave up the ghost. Maybe the t-stat is frozen.
 
Master mechanic said:
You have a mechanical fuel pump ? Maybe the rubber went. Shoots fuel back up the yellow hose to the carb. That yellow hose is supposed to be clear.

Maybe you have other issues with the cooling. Maybe the risers are clogged? Maybe the impeller went or you sucked something up the intake. Maybe the flappers went. Or maybe just maybe the exchanger gave up the ghost. Maybe the t-stat is frozen.
Click to expand...

I'm going to use my fake a lake to see if the cooling system is flowing or not. But is the tranny cooler supposed to be warm to the touch? I'm going to take a look at my carb to see how much fuel is being fed to the intake. I'm still getting familiar with the boat so I'm not sure if it's a mechanical pump or not.
 
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