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Max Online: 36273 @ 01/23/13 02:34 PM
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#11529787 - 04/08/16 02:15 PM 4-Stroke Gaining Oil
taterpop Online   content
Pro Angler

Registered: 01/30/13
Posts: 802
My 25Hp tohatsu 4-stroke oil level becomes over full after about four months of running and the oil looks very black. What might be the cause of this?

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#11529911 - 04/08/16 02:58 PM Re: 4-Stroke Gaining Oil [Re: taterpop]
BJH ( JUST JIGGING) Offline
TFF Team Angler

Registered: 10/24/04
Posts: 4039
Loc: grand prairie ,tx.
May be getting fuel in the crankcase!!!!

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#11530081 - 04/08/16 04:29 PM Re: 4-Stroke Gaining Oil [Re: taterpop]
Bob Landry Online   content
Extreme Angler

Registered: 08/10/11
Posts: 2658
Loc: Austin, Tx
It has to be gas or water. Drain it into a clear container and see if water settles to the bottom.
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2018 Robalo R180 CC, Yamaha 115

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#11531195 - 04/09/16 11:45 AM Re: 4-Stroke Gaining Oil [Re: taterpop]
taterpop Online   content
Pro Angler

Registered: 01/30/13
Posts: 802
I have been leaving the fuel line conected to the motor,could fuel be pushing through the primer bulb?

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#11531510 - 04/09/16 05:52 PM Re: 4-Stroke Gaining Oil [Re: taterpop]
Dawson Hefner Online   content
Extreme Angler

Registered: 09/10/09
Posts: 2835
Loc: Brownsboro, Tx
No. You either have gas leaking by the rings or you have water from cooling system getting in it. Change your oil into a clear container and look at it. Water will go to the bottom and your oil will likely be milky. You will smell it if it's gas. When you refill do not overfill. Once full any addition can look more pronounced, imagine the neck of a bottle.


Edited by Dawson Hefner (04/10/16 08:54 AM)
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#11531523 - 04/09/16 06:06 PM Re: 4-Stroke Gaining Oil [Re: taterpop]
taterpop Online   content
Pro Angler

Registered: 01/30/13
Posts: 802
Thanks all I will drain the oil and see what's up.

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#11533697 - 04/10/16 10:12 PM Re: 4-Stroke Gaining Oil [Re: taterpop]
taterpop Online   content
Pro Angler

Registered: 01/30/13
Posts: 802
Would it help if after each run I let the motor run dry of gas ?

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#11533733 - 04/10/16 10:37 PM Re: 4-Stroke Gaining Oil [Re: taterpop]
D Miner Offline
Outdoorsman

Registered: 03/06/14
Posts: 207
No.

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#11534105 - 04/11/16 09:17 AM Re: 4-Stroke Gaining Oil [Re: taterpop]
Dawson Hefner Online   content
Extreme Angler

Registered: 09/10/09
Posts: 2835
Loc: Brownsboro, Tx
After draining your oil when you go to refill look up the wet capacity of your motor, it will be a little less than dry. An ounce over on that small motor is going to make a big difference on your stick.
_________________________

www.texasmegafishadventures.com for guided rod and reel alligator gar angling
Licensed Guide Dawson Hefner
903-721-4296

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#11535115 - 04/11/16 03:27 PM Re: 4-Stroke Gaining Oil [Re: taterpop]
taterpop Online   content
Pro Angler

Registered: 01/30/13
Posts: 802
Dawson I fill it, then crank it, and check the oil with the filter full but about three weeks into the change oil is already coming out the top of the dipstick hole.

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#11535383 - 04/11/16 05:37 PM Re: 4-Stroke Gaining Oil [Re: taterpop]
Bob Landry Online   content
Extreme Angler

Registered: 08/10/11
Posts: 2658
Loc: Austin, Tx
Did you drain the oil into a glass container as was suggested 8 posts back to determine if you are getting water or gas in the oil?
Unless you are a pretty handy mechanic, the cure is going to be to have a shop fix it anyway. We've given you the two only probabilities.
The longer you run that motor with diluted oil, the closer you get to a repower.
_________________________
2015 Seaark 1872 MV CC Etec-90
Two Helix 12 CHIRP SI's, , MinnKota Riptide ST80/i-pilot Link, Bob's Hydraulic
2018 Robalo R180 CC, Yamaha 115

Bitter Gun Owner
Bitter Clinger
Armed Infidel

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#11535820 - 04/11/16 08:48 PM Re: 4-Stroke Gaining Oil [Re: taterpop]
taterpop Online   content
Pro Angler

Registered: 01/30/13
Posts: 802
Bob I did drain the oil no water that i could tell but I have only ran it a couple of times on the new oil change. I did notice the old oil seemed thin and extra black.

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#11535829 - 04/11/16 08:52 PM Re: 4-Stroke Gaining Oil [Re: taterpop]
Bruce's Guide Service Online   content
TFF Team Angler

Registered: 09/04/03
Posts: 4064
Loc: southlake
bad injector better take it to a shop or your going to spend a bundle
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#11536467 - 04/12/16 08:33 AM Re: 4-Stroke Gaining Oil [Re: taterpop]
Tommy Yetts Offline
TFF Team Angler

Registered: 12/14/02
Posts: 3489
Loc: Rockwall, TX USA
Do you do a lot of trolling? If your motor is running too cold from an open thermostat then it will not burn all of the fuel and the residual fuel will go to the crankcase! This is not a good thing because it has diluted your oil. If it were water in the oil it would be white.
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Tommy Yetts

www.rockwallmarine.com

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#11536823 - 04/12/16 11:05 AM Re: 4-Stroke Gaining Oil [Re: taterpop]
taterpop Online   content
Pro Angler

Registered: 01/30/13
Posts: 802
Tommy I do alot of running in the summer at night most of it is low to high idle that may be some of my problem.

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