HELP!!!!! Kohler V-twin 25 Hp Smoking

[Inman's lawn care]

I have a Kohler V-twin 25 Hp Smoking and using oil. I have to put 3-4 ounces of oil in eat day before starting. I check the compression it's about 135 -140.
I am not leaking oil on trailer or floor. When i start it up a huge cload of white smoke flys out and hangs around for awhile. When I warm it up and run for awhile and have to stop blue like smoke come's from the exhaust.:confused:

I have been reading threads like crazy and from some of the post it could be a head gasket or a reed valve. I think???:dizzy:

I am losing power sometimes. Like i can tell that its not pulling really hard like it should.

Please help on any advice.
Thanks for helping.

[Total.Lawn.Care]

Could be a head gasket, rings breaking down and causing oil to leak into the cylinder, or it could be a crack in a piston or cylinder wall. Whatever it is, it is leaving oil on top of the cylinder and that is what is causing your bad smoking problem when you start it up, it is that oil burning off. Looks like your compression is good (I am not sure what the specs should be) so it could just be a oil ring is shot on one cylinder. The loss of power could be that is cannot burn the fuel as well due to the oil in the chamber, or a sign of a further compression problem. Might want to perform a leakdown test to confirm the compression numbers.

[khouse]

don't panic. how many hours is on it? is the crankcase over filled? is there a lot of oil residue in the breather? what weight oil are you using?

[Inman's lawn care]

Have have 110 hours on it.
Not sure about the crank case....will have to look at that.
Oil SAE 10w-30

I noticed when i pulled the dip stick it seemed to be darker then normal. Not carmel color but darker. Would that mean the oil in the crank case is not flowing or hotter then it should. I have been doing ALOT of Leaf removal.
the air filter is not showing any signs of oil. Just normal dirt intake.

I changed the oil in the machine every 40 hours and before spring start up.


Please help on any advice.
Thanks for helping.

[Restrorob]

Sounds like a classic blown head gasket between the oil return ports, You can tell by looking at the plugs. One will look clean burning the other will look like it has more carbon build-up and dark oily looking.

[wriken]

Sounds like a classic blown head gasket between the oil return ports, You can tell by looking at the plugs. One will look clean burning the other will look like it has more carbon build-up and dark oily looking.
I have a 27 kohlor, probably 1200+ hours on it. At start up, not all the time but once in a while, it will blow out blue smoke for a second or 3, head gasket or maybe a valve guide?, if they have them?? This winter I was thinking of overhauling it.

[hondalowlow]

get new rings.

[Restrorob]

I have a 27 kohlor, probably 1200+ hours on it. At start up, not all the time but once in a while, it will blow out blue smoke for a second or 3, head gasket or maybe a valve guide?, if they have them?? This winter I was thinking of overhauling it.

Well, There are no replacement valve guides for this one. A leak-down test would show if it is a head gasket or rings, If possible have this test done before doing your overhaul.

[wriken]

ok will do, thanks

[Inman's lawn care]

Thanks Restrorob, i am at work right now. i will check the pluggs As soon as i get home tonight and report back. Trying to find some one in my area to do a leak down test.

will report back

Thanks in advice for the advice.

[Inman's lawn care]

I pulled the plugs and one side was clean and nice. The other side left side was so gummed up and burnt I couldn't believe it. I was pretty shocked.
So what would my next step be?:dizzy:

Thanks for all the help.

Thanks,
Inman's Lawn Care

wriken I am not trying to be any way but could you please post your own threads next time.

[wriken]

wriken I am not trying to be any way but could you please post your own threads next time.
I'll remember that:)
I've posted quite a few threads matter of fact.

[Restrorob]

So what would my next step be?


I have replaced so many of these head gaskets that the last 12 or so all I did is look at the plugs and pull the side down that had the nasty plug. There I would find the gasket blown or the breather reed broken, But have only found a couple reeds to be the problem. It's been mostly head gaskets.



wriken I am not trying to be any way but could you please post your own threads next time.

In regards to the above, In my opinion I see nothing wrong with someone having the same problem to chime in and ask a couple questions while the subject is open. It actually saves myself and others time in repeating ourselves in another thread. But if they continued to interrupt the original thread starter I would find it not very considerate of them.

[Dirty Water]

I was going to suggest valve guides or Stem Seals, but it seems the problem is solved.

At least changing the headgasket on these tiny engines is super easy.

[dcondon]

wriken I am not trying to be any way but could you please post your own threads next time.


He is posting on a similar question. He can post on this thread if he wants to!!!!:dizzy: :dizzy:

[Inman's lawn care]

wriken sorry if was any way or you took it any way.
I just find that when one question is asked its easier to see the post all in the same thread. So sorry wriken not trying to be anyway.

NOW!!!!
dcondon for you posting this "He is posting on a similar question. He can post on this thread if he wants to!!!!"

That was uncalled for I had not had a chance to get back to the computer to let wriken that i was incorrect. When i read the posts i didnt read through it clearly.

But I want to Thank Dirty Water, Restrorob and hondalowlow. Also anyone else i may have missed for your help.
When I get done i will post my findings and results.

Thanks to everyone.

[Restrorob]

When I get done i will post my findings and results.



Please do..... For it may help someone in the future when doing a search for the same type problem.

Good Luck

[Inman's lawn care]

I talked to a local mechanic and they said to try replacing all the normal stuff and the plugs first. So i did i started it up and no smoke happen. Well about two hours later it started smoking again and burning oil again.



What I replaced oil filter, oil, plugs, air filter, flushed the oil, compresstion test again it was like 125 - 135. dont make no since at all.

It has to be the rings. So this weekend I am going to tear down the head this time. Then replace everything rings, oil filter, oil, plugs :hammerhead:

[khouse]

it doesn't have to be the rings. really the only thing you did to limp it through for a couple of hours was put in a fresh plug. examine the head gasket first before just tearing down further.

[dchd1130]

get a leakdown test done that is the only way you will know for sure what your problem is more than likely it is a head gasket any small engine shop should be able to preform a leak down test for you if they cant I would seriously re consider getting any work done there

[Inman's lawn care]

Will do a leak down test..

Thanks khouse and dchd1130

will report more very soon.

[I MOW ALONE]

went through the same thing as you. one plug fouled same compression reading's as you. i guarantee you it's the head gasket like rob said. just dont want to see you do way more work than you have to.

[Restrorob]

I'll bet a quarter when you pull the left head you find the gasket blown at the oil return port, Look in that area closely.

[thecrankshaft]

It's the head gasket.