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#11383008 - 01/31/16 09:41 PM 225 Pro Xs Mystery Oil Leak.
ToadSnatcher14 Offline
Team Slot Fish

Registered: 08/19/09
Posts: 15033
Loc: Justin,Texas
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
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#11383604 - 02/01/16 10:13 AM Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10509
Loc: Littlefield Tx & Lake A. H. US...
I will look but I remember a service bulletin from Mercury about this.
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“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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#11383729 - 02/01/16 11:01 AM Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14]
JimmyP Offline
Pro Angler

Registered: 11/26/12
Posts: 802
Loc: Waxahachie, Texas
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.

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#11387454 - 02/02/16 06:14 PM Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14]
ToadSnatcher14 Offline
Team Slot Fish

Registered: 08/19/09
Posts: 15033
Loc: Justin,Texas
Thanks gentlemen.
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#11392744 - 02/04/16 07:18 PM Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14]
DJB Offline
Extreme Angler

Registered: 09/01/11
Posts: 1394
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

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#11401842 - 02/08/16 08:55 PM Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14]
Fork-Legend211 Offline
Extreme Angler

Registered: 07/25/11
Posts: 2163
Loc: Pot lickin your honey hole
Same problem on my Merc 250 pro xs
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#11402872 - 02/09/16 11:10 AM Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14]
SMOKE ON THA WATER Offline
Outdoorsman

Registered: 12/22/08
Posts: 207
Loc: kemp tx
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 .

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#11403965 - 02/09/16 06:47 PM Re: 225 Pro Xs Mystery Oil Leak. [Re: ToadSnatcher14]
DJB Offline
Extreme Angler

Registered: 09/01/11
Posts: 1394
There's a thread on BBC about this. Looks like it may be a problem

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