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motor smokes for a few minutes


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#1 lyall ONLINE  

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Posted May 26, 2017 - 04:04 PM

I was working on a Deere 210 with a 10 hp kohler motor.

When you start it, it smokes for a few minutes then the smoke stops.

He said that it only uses a little oil.  He mowers for about 1-1/2 hours and it uses a little oil ( less than 4 ozs)

 

He does not have a lot of money to have the motor rebuild at this time.

 

the motor runs good and sound good.

 

I checked the valve gaps and they are in specs.

 

The only thing I can think that would could the problem is a worn intake/exhaust valve guide/s.

 

 

Why would  the motor to smoke for a few minutes than stop smoking?

 

Any ideas what the problem is?

 

Thanks



#2 pharmer ONLINE  

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Posted May 26, 2017 - 04:17 PM

I work with people that do that......smoke for a few minutes then stop and return to what they really get paid to do.
As far as the engine, it's possible the breather is the problem. When was the the last oil change? Maybe bypassing the rings.
Until he can afford a rebuild keep an eye on the oil level
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#3 lyall ONLINE  

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Posted May 26, 2017 - 04:40 PM

I work with people that do that......smoke for a few minutes then stop and return to what they really get paid to do.
As far as the engine, it's possible the breather is the problem. When was the the last oil change? Maybe bypassing the rings.
Until he can afford a rebuild keep an eye on the oil level

I did check the breather when I was checking the valve gap and the breather looks okay.



#4 Xrperry OFFLINE  

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Posted May 26, 2017 - 07:24 PM

My oh160 and hh120 do that,but not all the time.look at the bright side ,,you don't have a dry start up.i think it's a good thing and it clears the damn mosquitos while your waiting for it to warm up

Edited by Xrperry, May 26, 2017 - 07:27 PM.

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#5 Kster526 OFFLINE  

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Posted May 26, 2017 - 07:28 PM

Sounds like it does it until it warms up and the rings stop the blow by.
New piston, rings and a quick cylinder honing will help
And are not that expensive.
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#6 jimmy G ONLINE  

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Posted May 26, 2017 - 07:54 PM

When the engine gets hot the oil gets vaporized and combust's with the gas,poof gone,keep oil up and RPM'S,carbon build up will have to be addressed as needed but should run for a long time,when it starts smoking hot, plugs and oil will pay for the teardown
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#7 EricFromPa ONLINE  

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Posted May 26, 2017 - 07:56 PM

Piston Rings are shot.

Once the rings warm up they expand a little.That's why it's smoking on startup. It will get much much worse.

 

If you put new rings in it now you should not have to have the engine bored out but it will still need to be honed. You do not need to buy a new piston or connecting rod unless the one that's in it is junk. But I would put a New connecting rod in it anyway since it more than likely has a good many hours on it and I'm willing to bet it has some wear on the journal.

 

Only need to replace the piston if the wrist pin is worn or the side of the piston is marred up bad. 


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#8 John Arsenault ONLINE  

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Posted May 27, 2017 - 07:09 AM

Its a kohler....I would buy the piston....piston skirts are weak on the kohlers.


Edited by John Arsenault, May 27, 2017 - 07:09 AM.

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#9 Oldford OFFLINE  

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Posted May 27, 2017 - 09:59 AM

My flathead briggs twin was using that much oil but not so much smoke.  I added some automotive "engine restore" to the crankcase pretty much fixed it.  cost under 10 bucks for the smallest can.

 

I sold an old Ford a couple years back with a K301, it was smoking on startup and using some oil.  Once i saw the Restore stuff seal up my Briggs I regretted selling the old Kohler without trying it first. 

 

this stuff i got the "4cylinder" size from the zone and added around half to my twin

enginerestorecan.jpg

also i ran Marvel Mystery in the oil and gas for a few tanks first trying to "loosen up the rings" but it didn't help the oil consumption.

just an idea, worked for me, good luck with it..

 

Can a leaky head gasket cause smoke until it warms up and seals the surfaces...?  just a thought


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