89 Merc 45 hp water leak around #1 plug & hot tel tale stream

ugadawg187

ugadawg187

Petty Officer 2nd Class
Joined
Aug 18, 2007
Messages
165
So i pulled my boat out & crank the motor today & the tel tale stream is hot to the touch. I got to looking & also noticed that the #1 cylinder has water seeping out the spark plug hole or in that area.:eek: Can someone explain this to me? I want to know if its worth fixing or should i make a paperweight out of it & look into another motor? :confused:
 

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Dave1027

Lieutenant Junior Grade
Joined
May 25, 2010
Messages
1,078
Re: 89 Merc 45 hp water leak around #1 plug & hot tel tale stream

Maybe just be the gasket under the cylinder block cover needs replacement.
 
Faztbullet

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,616
Re: 89 Merc 45 hp water leak around #1 plug & hot tel tale stream

Replace the impeller and water jacket cover. This gasket usually fails due to a weak or failed impeller as this is the top of the cylinder jugs...
 
ugadawg187

ugadawg187

Petty Officer 2nd Class
Joined
Aug 18, 2007
Messages
165
Re: 89 Merc 45 hp water leak around #1 plug & hot tel tale stream

Would a Merc maintanace manual help me with doing this project?
 
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latin monkey

Petty Officer 1st Class
Joined
Jun 5, 2010
Messages
272
Re: 89 Merc 45 hp water leak around #1 plug & hot tel tale stream

yes indeed and make sure you get a factory merc manual
 
ugadawg187

ugadawg187

Petty Officer 2nd Class
Joined
Aug 18, 2007
Messages
165
Re: 89 Merc 45 hp water leak around #1 plug & hot tel tale stream

Faztbullet said:
Replace the impeller and water jacket cover. This gasket usually fails due to a weak or failed impeller as this is the top of the cylinder jugs...
Click to expand...

Faztbullet this isnt something thats going to blow my mind is it? Im keeping a watch on ebay for a merc manual cause i had a chiltons manual with my 135 & i could make heads or tails of that thing. Oh and i did locate a merc maintanance manual but it looks nothing the others listed on ebay but is that the right manual?
 
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