Mercruiser 470 oil coming out of weep hole ? Normal ?

K

kevinstan

Petty Officer 2nd Class
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Aug 19, 2012
Messages
169
Changed the oil in the outdrive and had both the top and bottom oil plugs out. While pumping in oil from the bottom I noticed oil coming out of the weep hole. Is this normal or do I have a problem ? No water in the oil at all but oil coming from the weep hole. What should I do ?
 
K

kevinstan

Petty Officer 2nd Class
Joined
Aug 19, 2012
Messages
169
What is the easiest way to pressure test ? And if it doesn't hold pressure, how to I pinpoint the leak to fix ?
 
bruceb58

bruceb58

Supreme Mariner
Joined
Mar 5, 2006
Messages
30,591
Either buy or make a pressure tester.

http://forums.iboats.com/forum/engin...eck-prior-post

I own this one:
s34.jpg

http://www.firstchoicemarine.com/p-8...ester-s34.aspx
http://www.stevensinstrument.com/gearcase.htm
 
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K

kevinstan

Petty Officer 2nd Class
Joined
Aug 19, 2012
Messages
169
Expensive tool just to determine if there is actually a leak. With the oil coming from the weep hole I think shows there is in fact a leak. Is a pressure test still needed ? And how do I determine where exactly the leak is coming from ?
 
B

BRG25

Chief Petty Officer
Joined
Jul 13, 2001
Messages
528
You pump the drive up with air pressure and listen for the leak. Spray soapy water and look for bubbles.

Or...just take it to a shop and have them test it...
 
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K

kevinstan

Petty Officer 2nd Class
Joined
Aug 19, 2012
Messages
169
Ok that makes sense. What is the cheapest way to accomplish this without purchasing a $150 tool.
 
bruceb58

bruceb58

Supreme Mariner
Joined
Mar 5, 2006
Messages
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