is this a sign water in bottom cylinder??

F

fishfeatures

Senior Chief Petty Officer
Joined
Mar 29, 2011
Messages
743
went out today and the motor acted up , 1990 60hp. it dropped RPM and sounded like a clattering noise coming from it.

I whipped of the head to check cylinders and I think I have water intrusion on no.3. Now I have rebuilt this motor recently so all gaskets are new. Only thing is no.3 looks cleaner in about 3/4 of the dome, and the plug should be fouled from runnign it at 100:1 but looks clean, and there are rusty signs at the bottom of the gasket...
IMG00079-20130613-1801.jpg
IMG00078-20130613-1801.jpg

the gasket looks damaged here too at the top of the hole on the LHS
IMG00082-20130613-1803.jpg

what you guys think?
 
B

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: is this a sign water in bottom cylinder??

As clean as it is, looks like water. Did you do a compression test before you pulled the head off ??
 
nwcove

nwcove

Admiral
Joined
May 16, 2011
Messages
6,293
Re: is this a sign water in bottom cylinder??

i think i need to ask why you were running it at 100:1 ?
 
F

fishfeatures

Senior Chief Petty Officer
Joined
Mar 29, 2011
Messages
743
Re: is this a sign water in bottom cylinder??

boobie said:
As clean as it is, looks like water. Did you do a compression test before you pulled the head off ??
Click to expand...

No i took it off in case of damage and didn't want to chance testing it in case there was..
 
F

fishfeatures

Senior Chief Petty Officer
Joined
Mar 29, 2011
Messages
743
Re: is this a sign water in bottom cylinder??

nwcove said:
i think i need to ask why you were running it at 100:1 ?
Click to expand...

Yeah was thinking double oil in my head when typing and the usual 50:1 turned into 100:1 .....obviously it should be 25:1 (which is what i'm running) good spot nwcove...
 
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