89 merc 70 horse 3 cyl runs rough

dan_crosby

Cadet
Joined
Jan 6, 2012
Messages
12
out fishing the other day trolling boat ran good across the lake then lost most of its power couldnt get it to plane out go it to the launch was puking out foamy oil/water/gas mixture out of the three port exhaust... i changed the gas put new fuel filter on... seems as if its not running on all cylinders... kinda new at working on boat motors is there a trick to checking fire? number 2 plug was wet with gas and number 3 plug was oily and number 1 plug was running perfect any ideas would be helpful! and sitting on the trailer with muffs on it its now puking same foamy mixture out of exhaust on prop
 

emoney

Commander
Joined
Jul 19, 2010
Messages
2,551
Re: 89 merc 70 horse 3 cyl runs rough

Just a bump so one of the pros around here see your thread. They fall off quickly around here.
 
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