Oil Resevoir Empty - Troubleshooting ideas?

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acampane

Seaman
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Aug 5, 2010
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Hello guys and gals quick question. I have a 7.4 Mercruiser W/bravo outdrive...During my recent trip to block island from mystic ct my Alarm started sounding, after going through a checklist i noticed that the Outdrive oil reservoir bottle I believe in the back was completely empty. The entire contents of the bottle were in the engine compartment. Every now and then for the past month i have seen on occasion a oil slick to the rear of my boat so obviously this is where that was coming from. This is a very slow leak...The bottle itself doesn?t appear to be cracked or broken any ideas where she would be leaking from?
 

Bondo

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Apr 17, 2002
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Re: Oil Resevoir Empty - Troubleshooting ideas?

Ayuh,... It could be the Bottle, the hose from it, or the fitting in the transom,....

The Only way to know, is to Look...

Is the Drive still full of oil,..??
 

acampane

Seaman
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Aug 5, 2010
Messages
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Re: Oil Resevoir Empty - Troubleshooting ideas?

Bond-o, appreciate the reply - I havent pulled the boat out of the water, trailer is 2 hours away. I carry spare oil on the boat so i refilled bottle and alarm went off and made it back to my home port. I know alarm was obviously going off do to the sensor. I did quickly look over the bottle and the connection to the bottle and didnt see aparent leaks. I still have to check the transom connection, couldnt do it out at block as i believe i have to move a few other lines to get to the connection. Im just looking for spots to check on. appreciate the help so far!
 

SC_Regal

Petty Officer 3rd Class
Joined
May 16, 2007
Messages
78
Re: Oil Resevoir Empty - Troubleshooting ideas?

Make sure to pull the drive. There is a seal in the upper housing around the yolk - if it goes bad oil will go into the bellows and through the gimbal bearing into the bilge
 

acampane

Seaman
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Aug 5, 2010
Messages
52
Re: Oil Resevoir Empty - Troubleshooting ideas?

sc_regal - Is there a way to determine if that is the problem while the boat is in the water? I don't mind pulling the drive but would prefer to determine or physically make the deduction before going through the steps....Thanks
 
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