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Reload this Page Cub Cadet 2166 puking oil out of breather tube
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  #1  
Old 04-27-2020, 05:13 AM
roadblock roadblock is offline
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Default Cub Cadet 2166 puking oil out of breather tube
I just bought a 2166 with CH16S-45509 motor. The whole underside if the hood was covered with oil and gunk. I was told it was the PTO seal. I took the mower to the car wash. After it dried, the seal appeared dry. The oil was coming out of the breather tube. I checked the read valve and replaced the head gasket. I still have the problem. Any suggestions ??
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Old 04-27-2020, 07:17 AM
R Bedell R Bedell is offline
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First, welcome to OCC...........

Quote:
I checked the read valve
Can you further expand on what you mean ??

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Old 04-27-2020, 08:15 AM
Mike McKown Mike McKown is offline
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A leaky crankshaft seal can make the engine pump oil out of the breather. While you're checking the front seal, see if you can move the crankshaft up/down.

If you're compression is good, I'd think you have a crankcase sealing problem somewhere.
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Old 04-27-2020, 09:35 AM
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cooperino cooperino is offline
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is the oil level higher than it should be.... does it smell like gas?
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Old 04-28-2020, 05:33 AM
roadblock roadblock is offline
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Default Oil problem on 2166
When I first got the mower the oil was over full and smelled like gas, I changed it and replaced the carb. The old one had rust and dirt in it. I have replaced the head gasket. I am afraid that the old owner ran it a lot over full because of all the mess under the hood. I need to do a leak down test, to see if he took out the rings.
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Old 04-28-2020, 08:41 AM
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cooperino cooperino is offline
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Quote:
Originally Posted by roadblock View Post
When I first got the mower the oil was over full and smelled like gas, I changed it and replaced the carb. The old one had rust and dirt in it. I have replaced the head gasket. I am afraid that the old owner ran it a lot over full because of all the mess under the hood. I need to do a leak down test, to see if he took out the rings.
Sounds like you found your issue.
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Old 04-28-2020, 09:51 AM
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ol'George ol'George is offline
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Quote:
Originally Posted by roadblock View Post
When I first got the mower the oil was over full and smelled like gas, I changed it and replaced the carb. The old one had rust and dirt in it. I have replaced the head gasket. I am afraid that the old owner ran it a lot over full because of all the mess under the hood. I need to do a leak down test, to see if he took out the rings.
You need to address the reason you are filling the crankcase with fuel.
A needle/seat not closing properly or a ruptured diaphragm in the fuel pump are 2 reasons.
If you replaced the heads gasket you saw the condition of the cyl walls.
An engine will make a real big mess running only a short time vomiting it's diluted lubrication out the filler tube.
Good thing is it keeps things from rusting
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Old 05-02-2020, 09:09 AM
roadblock roadblock is offline
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Default Oil problem on 2166
I found out the fuel pump diaphragm leaks fuel into crank case waiting on new fuel pump.
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