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Author Topic:   Water in #2 cylinder

tash329 posted 01-17-2006 04:53 PM ET (US)
I have a 30hp Evinrude 1986. The plug in the number 2 cylinder shows signs of water. Any ideas as to cause?
Buckda posted 01-17-2006 04:57 PM ET (US)
Head Gasket Leak?
I'd take it to your mechanic immediately (before you run the engine again).
Dave
Teak Oil posted 01-17-2006 05:35 PM ET (US)
Most likely a head gasket as Dave suggested. Throw a new gasket on, check the head for flatness, and then do a leak down test once its back together
Chuck Tribolet posted 01-17-2006 06:21 PM ET (US)
Check head for flatness BEFORE installing new head gasket.
(It's kinda hard afterwards). And check the block for
flatness also.
Don't delay - that water is causing corrosion in places you
really don't want corrosion.

Chuck
lorin posted 01-17-2006 09:15 PM ET (US)
I just went through the same thing with an 1985 Evinrude 30 hp. After scuba diving it was hard to start and I ended up returning 2 miles to the dock running on one cylinder. The next day I was leaving on a trip so I didnt have a chance to look at anything. When I returned the powerhead was frozen-the head gasket had failed. I ended up buying a rebuilt powerhead for about $1100.
Brys13s posted 01-18-2006 09:16 PM ET (US)
If the head is not flat,try hand lapping it with cloth backed sandpaper on a flat surface like the top of a table saw or a thick piece of glass.
cbgann posted 01-21-2006 03:42 PM ET (US)
Might want to check compression before t/d. If compression is good, could have a cracked or porous block.
cbgann posted 01-22-2006 05:33 PM ET (US)
Tash - If this is a salt water engine; you may have a corrossion/electrolisys? issue where the aluminum in the water jacket and the top of the liner meet. Repaired by welding and resleeving. Interesting, have only seen this problem on this model OMC.

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Author	Topic: Water in #2 cylinder
tash329	posted 01-17-2006 04:53 PM ET (US) I have a 30hp Evinrude 1986. The plug in the number 2 cylinder shows signs of water. Any ideas as to cause?
Buckda	posted 01-17-2006 04:57 PM ET (US) Head Gasket Leak? I'd take it to your mechanic immediately (before you run the engine again). Dave
Teak Oil	posted 01-17-2006 05:35 PM ET (US) Most likely a head gasket as Dave suggested. Throw a new gasket on, check the head for flatness, and then do a leak down test once its back together
Chuck Tribolet	posted 01-17-2006 06:21 PM ET (US) Check head for flatness BEFORE installing new head gasket. (It's kinda hard afterwards). And check the block for flatness also. Don't delay - that water is causing corrosion in places you really don't want corrosion. Chuck
lorin	posted 01-17-2006 09:15 PM ET (US) I just went through the same thing with an 1985 Evinrude 30 hp. After scuba diving it was hard to start and I ended up returning 2 miles to the dock running on one cylinder. The next day I was leaving on a trip so I didnt have a chance to look at anything. When I returned the powerhead was frozen-the head gasket had failed. I ended up buying a rebuilt powerhead for about $1100.
Brys13s	posted 01-18-2006 09:16 PM ET (US) If the head is not flat,try hand lapping it with cloth backed sandpaper on a flat surface like the top of a table saw or a thick piece of glass.
cbgann	posted 01-21-2006 03:42 PM ET (US) Might want to check compression before t/d. If compression is good, could have a cracked or porous block.
cbgann	posted 01-22-2006 05:33 PM ET (US) Tash - If this is a salt water engine; you may have a corrossion/electrolisys? issue where the aluminum in the water jacket and the top of the liner meet. Repaired by welding and resleeving. Interesting, have only seen this problem on this model OMC.