Possible crankshaft seal leak

sailor_turned_stinkpotter

Petty Officer 3rd Class
Joined
Jan 5, 2003
Messages
78
First of all, I just want to say the thread "My carbs didn't look dirty...is this normal?" has been an absolute wealth of info for me and probably alot of other people. :) :) :) I learned around ten things about my engine and troubleshooting I didn't really know before....for example the really high compression ratio (mine is 160 per cylinder after rebuild) on the older 50, 55, and 60hp two cylinders. (mine is a 1981 60hp two cylinder)<br />Another thing of interest was Outboard Jims pointer about any oil under the flywheel indicating a possible crankshaft seal leak.<br />Well, I recently finished rebuilding my engine and it seems to be running fine, albeit on my stand with muffs, but I noticed a very small amount of oil on the starter side of the motor that looked like it had been lightly sprayed there. I didn't really think anything of it until I saw a small amount of pooled oil (about the size of a dime) leaking from the bottom of the engine cowling down onto the lower unit. That got my attention, but I couldn't see where it came from. :eek: <br />And then I remembered I reused the crankshaft seal when I reassembled the motor since it looked okay to my unexperienced eyes. It was slightly flattened in a couple spots but I thought it was okay.<br />If the crankshaft seal IS leaking, would I be seeing any other symptoms...I mean the engine seems to be running fine although I've yet to boat test it on the harbour.<br />Okay, hopefully this is just much ado about nothing, but you know how some of us newbies are...we get paranoid about everyhthing after we do some major work on our engines.<br />Thanks, dave. :)
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Possible crankshaft seal leak

Lets take a peek at the simple things first. There should be a small hose from the back of the air silencer base to the bottom of the crankcase. Make sure that hose is hooked up and not leaking. <br /><br />Good luck!
 
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