Water in bottom cylinder 1990 force 50hp

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Billie Jean

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Aug 6, 2009
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Hello boat world! I am new to i boats but have been reading several different posts for the last week. I have a 1990 Force 50hp that has water in the bottom cylinder. Prior to changing the head gasket i has 150psi on top and 120 psi on the bottom.I changed the head gasket and have 150 psi on both cylinders.
Did a test run and it seems like it was running worse and more water is in the cylinder.
I am going to replace the exhaust gasket however i did not see any obvious damage when i removed the cover. Also if that gasket was damaged would water be in both cylinders?
Any help or input would be greatly appreciated......
 
B

Blade_Link

Seaman
Joined
Aug 4, 2009
Messages
60
Re: Water in bottom cylinder 1990 force 50hp

i dont think there would be water in both but id be looking for a crack in the block, at no time should water even get near the cylinder use a heavy oil mix to keep that motor from seizing
 
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john from md

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Apr 13, 2008
Messages
2,184
Re: Water in bottom cylinder 1990 force 50hp

You may have damaged the head gasket during installation. You did use a torque wrench to tighten the bolts didn't you?

John
 
B

Billie Jean

Recruit
Joined
Aug 6, 2009
Messages
2
Re: Water in bottom cylinder 1990 force 50hp

I have a repair manual and a good mechanical background. However, I do not know much about outboard boat engines.
Could the impeller water tube o-ring up top have something to do with it?

Thanks
 
J

john from md

Commander
Joined
Apr 13, 2008
Messages
2,184
Re: Water in bottom cylinder 1990 force 50hp

If the upper seal is missing or damaged, usually it would cause a leak and you would get an overheat alarm. I can't see it having anything to do with the water getting into the cylinders.

John
 
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