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post #1 of 29 Old 11-25-2014, 09:40 PM Thread Starter
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snowblower smoking alot

I have a 1998 10 hp yard machine snowblower. The engine runs great and has good compression, but it smokes very badly. I always have to add alot of oil after each use and it makes my clothes smell very stinky
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post #2 of 29 Old 11-25-2014, 10:13 PM
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probably worn piston rings, if its a tecumseh its honestly not worth rebuilding considering the price of a new engine, especially if you have to pay a pro for parts and labor and cant do the job yourself. the job consists of removing the head, shrouding, sump cover, removal of rod, piston, rings, honing the cylinder, and reassembly.
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post #3 of 29 Old 11-25-2014, 10:17 PM
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Quote:
Originally Posted by shark56 View Post
I have a 1998 10 hp yard machine snowblower. The engine runs great and has good compression, but it smokes very badly. I always have to add alot of oil after each use and it makes my clothes smell very stinky
Did you have a compression test? And are you sure you are not adding too much oil? May need head work and change gaskets.

Snow Removal Apparatus I own:
Ariens ST1530DLE, and good ole arm powered scrapper.
The 15 HP is a new Ducar engine sold
by Princess Auto in Canada.
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post #4 of 29 Old 11-25-2014, 10:19 PM
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Are you sure the oil isn't over filled? Simply putting too much oil in it can cause the same issue. Could also be something with the valves leaking oil into the intake. Or as was stated you could need new oil rings or the cylinder walls could be scratched from something getting in there and allowing some oil to get through.

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post #5 of 29 Old 11-25-2014, 10:23 PM
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pull the cord over slowly and listen to the muffler, if you can hear a loud hiss that sounds like an air leak the exhaust valve is leaking
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post #6 of 29 Old 11-25-2014, 10:27 PM Thread Starter
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Could the Pistons be worn out even though it has good compression and lots of power? The engine still runs great, but smokes like crazy. I just checked and the oil is at the correct level.
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post #7 of 29 Old 11-25-2014, 10:30 PM
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The piston has 3 rings on it. The top 2 rings are for compression and the bottom ring is to keep the oil out. It is possible for the bottom ring to be worn out or stuck inside and the top rings to still be sealing.

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post #8 of 29 Old 11-25-2014, 10:33 PM
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Could the Pistons be worn out even though it has good compression and lots of power? The engine still runs great, but smokes like crazy. I just checked and the oil is at the correct level.
Did you have a compression test done?

Snow Removal Apparatus I own:
Ariens ST1530DLE, and good ole arm powered scrapper.
The 15 HP is a new Ducar engine sold
by Princess Auto in Canada.
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post #9 of 29 Old 11-25-2014, 10:35 PM Thread Starter
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Yes the compression is good. Do you think it could maybe be the valves? How much would it cost to get the rings replaced or have the valves redone?
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post #10 of 29 Old 11-25-2014, 10:46 PM
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Here are some good videos of a Tecumseh rebuild:

https://www.youtube.com/user/MultiKh...mseh+refurbish

Look at the Tecumseh Refurbish ones. There are 5 or 6 of them. They are long, but very detail oriented.

Also check out some of these videos:

https://www.youtube.com/user/donyboy73

The parts are cheap and the work is pretty simple. Also, you can probably barrow the special tools from an auto parts store. Just pay a deposit and get a refund when you return them.

Please direct all snow blower questions to the forums and not to me with PMs.
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