65hp 3 cyl Mercury cylinder has water in it

[flahunter00]

Ok fellas I have seen some of the post on here about water being in the cylinder but I still would like to get a few comments on my problem.<br /><br />The motor will crank up and idle fine and it will run fine at lower speeds but at high speed it boggs down when the plug get fowled out.<br /><br />Does this sound like a gasket problem or could it be a cyl. wall crack?<br /><br />I will be tearing it down starting tommorow.<br /><br />Any suggestion????

 

[flahunter00]

Re: 65hp 3 cyl Mercury cylinder has water in it

bump

 

[petryshyn]

Re: 65hp 3 cyl Mercury cylinder has water in it

If there is water in the cylinder, you are doomed. (likely corroded through) If it is oil fowling a plug, be sure you have good spark at that cylinder. The power packs on the older ones were known for losing cylinders...if you can, check compression as well. Don't tear it down until you've trouble shot it thoroughly...