Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  
Terry_Hart

Smoking Kohler

Recommended Posts

Terry_Hart
My 18hp Kohler twin I think it is a CH18 in a Soveriegn started smoking the last storm. It ran ok, started right up. Then white smoke like crazy and sputtering. I let it run and it smoothed out some but continued to smoke. Then I noticed the snow blower was all wet. Black oil. What do you think head gasket? or Rings?

Share this post


Link to post
Share on other sites
Brettw
You should be able to inspect the motor for the head or other gasket. Is the external surface of the muffler covered in oil / burned oil from spray froma leaking gasket? That would smoke. If it were rings, I would think the oil / smoke would have exited throught the exaust, leaving an oily black coating on the inside of the exaust pipe. Does the exaust on that motor face the snow blower? If I had to make a blind guess, I would guess a gasket failure, but you should be able to determine the cause by visual inspection.

Share this post


Link to post
Share on other sites
Storm7012
Guy I know has a 7119 and it did something like that. He said it blow some plug and was pumping the oil out the hole. That's all I know, didn't say what plug or anything.

Share this post


Link to post
Share on other sites
dahindahillbilly
i found out that the 18hp kohlers build up carbon at the top of the cylinder. i took the one i'm puting on a 416 shuttle,apart and cleaned out the carbon.then put it back together it quit smoking and runs a lot better.

Share this post


Link to post
Share on other sites
Terry_Hart
I am hoping it is only head gaskets. It is going to the dealer this weekend. Just too busy at work to tackle it right now. This is the second Kohler that backfires and ends up trouble. Never had that with any of the Briggs.

Share this post


Link to post
Share on other sites
toomanytractors
Terry: I had that happen to the CH18S on my Sovereign. The air filter was plugged so bad it sucked all the oil out of the crankcase and burned it. Replaced the air filter and changed oil and filter and it seemed to have solved the problem. That engine has the air intake system set up so that the cooling fan on the flywheel blows all the dirt and crap right into the air filter making it necessary to check and clean the filter much more often than a lot of other engines. This in my opinion is a very stupid setup.

Share this post


Link to post
Share on other sites
Terry_Hart
Thanks for the thoughts. It would be great if that is all it is. I changed the filter this fall. I dropped it off at the dealer this morning. I guess I will have to wait for the news this week.

Share this post


Link to post
Share on other sites
Terry_Hart
Talked to the dealer yesterday. The issue was the carburator. Too much fuel. Rebuilt carb, and oil change. Still $200. Expensive but way cheaper that head gaskets or rings!

Share this post


Link to post
Share on other sites
Terry_Hart
Last update on this one. I picked up my tractor tonight, seems to run fine, idles down low and smoother than ever. So far so good! Thanks for all your thoughts and ideas.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  

×