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225 Pro Xs Mystery Oil Leak. #11383008 02/01/16 03:41 AM
Joined: Aug 2009
Posts: 19,200
ToadSnatcher14 Offline OP
Team Slot Fish
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Posts: 19,200
I've been looking for a leak on my engine the past few weeks. It's collecting in the splash pan and seeping out on to mid section through drain. I've looked at the hoses and have found no leaks. Oil is heaviest under starboard (right) side by oil pump. There are I believe 7 small hoses going to all cylinders and one to the compressor I believe. I tighten the bolts on the plenum as well. Inspected reservoir on motor and looks fine.

I've ran it on muffs and can't see anything after I've cleaned it. I've even taken splash pan off and no visible drip. This leak must occur at higher rpm's when running. I've heard there is a small return line under the fly wheel that could have fallen off but I need to still look into this if it is true.

I'm beginning to think oil pump has a leak. Any one have similar experiences or could help shed some light?

Thank you,

Kyle

Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14] #11383604 02/01/16 04:13 PM
Joined: May 2003
Posts: 11,586
gary purdy Offline
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I will look but I remember a service bulletin from Mercury about this.


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14] #11383729 02/01/16 05:01 PM
Joined: Nov 2012
Posts: 806
J
JimmyP Offline
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J
Joined: Nov 2012
Posts: 806
My 250 Pro XS did the same thing. They had to replace oil pump. I was lucky it was under warranty. I took it back 3 times before they figured it out.

Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14] #11387454 02/03/16 12:14 AM
Joined: Aug 2009
Posts: 19,200
ToadSnatcher14 Offline OP
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Thanks gentlemen.

Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14] #11392744 02/05/16 01:18 AM
Joined: Sep 2011
Posts: 3,767
D
DJB Offline
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Just had oil pump on 2015 pro xs 175 replaced. Shop said Mercury told them to replace it.No one could find leak so I'm anxious to see if it's fixed

Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14] #11401842 02/09/16 02:55 AM
Joined: Jul 2011
Posts: 2,262
F
Fork-LegendV21 Offline
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Same problem on my Merc 250 pro xs

Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14] #11402872 02/09/16 05:10 PM
Joined: Dec 2008
Posts: 233
S
SMOKE ON THA WATER Offline
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Joined: Dec 2008
Posts: 233
Yep me too. Multi injection oil pump . If your leaking your not getting proper oil to cylinders. Do not run with it leaking. 1200 bucks it cost me, and they have to prime new thru computer .

Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14] #11403965 02/10/16 12:47 AM
Joined: Sep 2011
Posts: 3,767
D
DJB Offline
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Joined: Sep 2011
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There's a thread on BBC about this. Looks like it may be a problem

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