water in top and bottom cylinder of 115 hp

Bobk321

Cadet
Joined
Mar 21, 2005
Messages
11
I am getting water in top and bottom cylinder of my 1977 115 mercury is this a gasket problem?<br /><br />Thanks
 

BaysideMarine

Seaman Apprentice
Joined
Feb 17, 2005
Messages
35
Re: water in top and bottom cylinder of 115 hp

Nope, its a bottom seal issue. There is a balance line that runs between number 1 and 6. When the seal on the crankshaft lets go it allows water into number 6 and to a lesser extent (via the balance tube) into number 1.<br /><br />You need to remove the powerhead and replace the bottom seals. Its actually an easy job. Remove the horseshoe shaped cowl at the top of the midsection and then the 8 nuts that hold the powerhead.<br /><br />Undo all relevant electrical connections on the powerhead and lift entire unit off. Once you are used to doing this it takes about 15-20 minutes from start to finish!!<br /><br />Dig out the old seals and if the crankshaft is ok then replace with new seals. You can actually fit three on the shaft instead of two. If the shaft is scored (most likely) then order a speedy sleeve and fit that on the crankshaft and then fit three new seals.<br /><br />Then you should be back in business...<br /><br />Cheers,<br /><br />Nicholas
 

DHPMARINE

Captain
Joined
Dec 16, 2003
Messages
3,688
Re: water in top and bottom cylinder of 115 hp

My first thought is a burned out exhaust baffle.<br /><br />DHP
 
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