MTD Tecumseh Leaking Oil - Snowblower Forum : Snow Blower Forums
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post #1 of 37 Old 11-26-2018, 08:14 PM Thread Starter
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MTD Tecumseh Leaking Oil

I have a 90's model Tecumseh that is leaking oil from the drain or vent tube, whatever the tube is by the Carb. It's somewhat milky at first and then it turns to a darker brown. It'll barely seap out at first and then once its ran for about a minute it starts coming out more. I just picked up the snowblower for free and that's the only thing wrong with it. Big fix? Easy fix? Maybe incorrect oil or too much oil? Was hoping someone with more experience could steer me in the right direction. Thanks.
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post #2 of 37 Old 11-26-2018, 08:23 PM
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Check oil level.

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post #3 of 37 Old 11-26-2018, 08:28 PM Thread Starter
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So is that a normal thing for it to do if the oil level is incorrect?
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post #4 of 37 Old 11-26-2018, 08:40 PM
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If the oil is overfilled it has to go.somewhere. Did you youtube this? Did you google it? I have never had one do this but i have never had an overfilled engine.
The milky stuff is simply from condensation. It'll clear out when the engine warms up. Usually caused by not running it to full operating temp.

Joe

Sent from my junky old Hisense 7" tablet that I can barely see.
Toro 724
Toro CCR 3650E
Toro 5/21 sold
Ariens 5/22 ss ..Sold
Ariens Sno Tek 7/24 sold.
Old green plastic snow shovel... Sent.to shovel Heaven
Old quarry shovel for ice.
New.green shovel
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post #5 of 37 Old 11-26-2018, 08:43 PM
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Have you done a compression test on it? Does it start pretty easily? Might have a broken ring.

Joe

Sent from my junky old Hisense 7" tablet that I can barely see.
Toro 724
Toro CCR 3650E
Toro 5/21 sold
Ariens 5/22 ss ..Sold
Ariens Sno Tek 7/24 sold.
Old green plastic snow shovel... Sent.to shovel Heaven
Old quarry shovel for ice.
New.green shovel
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post #6 of 37 Old 11-26-2018, 08:54 PM Thread Starter
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I tried both and didnt see any results similar to the problem I have. It starts right up on the first pull actually, I haven't done a compression test because it runs great and I haven't felt like I've needed to. So draining the oil and refilling it would probably be the first thing to do?
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post #7 of 37 Old 11-26-2018, 08:56 PM
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Originally Posted by Brocneal View Post
I tried both and didnt see any results similar to the problem I have. It starts right up on the first pull actually, I haven't done a compression test because it runs great and I haven't felt like I've needed to. So draining the oil and refilling it would probably be the first thing to do?
See if its over filled 1st most likely not that
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post #8 of 37 Old 11-26-2018, 09:04 PM
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Quote:
Originally Posted by Brocneal View Post
I tried both and didnt see any results similar to the problem I have. It starts right up on the first pull actually, I haven't done a compression test because it runs great and I haven't felt like I've needed to. So draining the oil and refilling it would probably be the first thing to do?
If it starts easily it more than likely has good compression so no broken ring so no blow by. Probably overfilled. Drain and refill w/proper amount. Let us know how it truns out.

Joe

Sent from my junky old Hisense 7" tablet that I can barely see.
Toro 724
Toro CCR 3650E
Toro 5/21 sold
Ariens 5/22 ss ..Sold
Ariens Sno Tek 7/24 sold.
Old green plastic snow shovel... Sent.to shovel Heaven
Old quarry shovel for ice.
New.green shovel
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post #9 of 37 Old 11-26-2018, 09:45 PM Thread Starter
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Quote:
Originally Posted by Brocneal View Post
I tried both and didnt see any results similar to the problem I have. It starts right up on the first pull actually, I haven't done a compression test because it runs great and I haven't felt like I've needed to. So draining the oil and refilling it would probably be the first thing to do?
See if its over filled 1st most likely not that
most likely not what? Overfilled?
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post #10 of 37 Old 11-26-2018, 09:47 PM Thread Starter
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Quote:
Originally Posted by Brocneal View Post
I tried both and didnt see any results similar to the problem I have. It starts right up on the first pull actually, I haven't done a compression test because it runs great and I haven't felt like I've needed to. So draining the oil and refilling it would probably be the first thing to do?
If it starts easily it more than likely has good compression so no broken ring so no blow by. Probably overfilled. Drain and refill w/proper amount. Let us know how it truns out.
I will do that. That was one of my first thoughts but wasn't sure. So if its overfilled, the condensation will be whitish and overflow through the tube by the carburetor? I was hoping it wasn't a bad deal or something too big, cause it's a great running machine and would hate to mess with it
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