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Author Topic: Kohler is sick  (Read 1234 times)

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Offline sawguy21

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Re: Kohler is sick
« Reply #20 on: June 18, 2021, 11:36:29 AM »
Then it would run lean. Have a look at the spark plug wire, it could be cracked and arcing killing power at the plug.
old age and treachery will always overcome youth and enthusiasm

Offline mike_belben

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Re: Kohler is sick
« Reply #21 on: June 18, 2021, 10:21:36 PM »
Proverbs 19:11

Offline mike_belben

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Re: Kohler is sick
« Reply #22 on: June 18, 2021, 10:24:12 PM »
Have a look at the spark plug wire, it could be cracked and arcing killing power at the plug.
X2. 
Run it, temp gun the exhaust runners. Swap wires, check cylinder temp again and see if the dead hole follows the wire.  Pretty good possibility if its got integrated coil and wire.  Ive had a few coil wires corrode off the coil stud under the jacket.  Its just a screw that the wire is threaded onto these days. 
Proverbs 19:11

Offline Brad_bb

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Re: Kohler is sick
« Reply #23 on: June 21, 2021, 01:54:48 AM »
If you're starting it and runs pretty good, but after it starts warming up it dies, that may mean that as it heats up and things expand, something is happening due to the expansion?  In my case, my Kohler CH620 last summer blew a head gasket.  It would run at first, but as it heated up, the gap expanded.  If it's on the intake side, you'd be sucking too much air destroying the proper air/fuel ratio.  It will also affect your plug, because now you'd have a lean condition.  Just one thing to consider.  Changing the head gasket was not really a bad job at all.  I also cleaned all the soot from the head combustion chambers while I was at it.
Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!

Offline Southside

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Re: Kohler is sick
« Reply #24 on: July 10, 2021, 10:45:15 PM »
Well earlier this week she fowled the other plug and my ignition tester showed both were good so today we tore into her.  Did not find much at first, but noticed liquid gas in the manifold under the carb after I pulled it.  Enough I could see it and soak it up with a rag, so figured the carb has to be flooding down.  The manifold isn't exactly symmetrical so I think it is possible that if she was flooding gas all this time it might go to the one cylinder over the other, until it got worse.  At least that's my working theory.  Everything else seemed to be fine.  

Could not see an obvious issue with any of the carb seals and such, but it would not take much so a rebuild kit is on the way.  
Franklin buncher and skidder
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Enough cows to ensure there is no spare time.
White Oak Meadows

Offline Southside

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Re: Kohler is sick
« Reply #25 on: July 20, 2021, 10:15:23 PM »
Well, as much as I doubted it at first it was the carb.  Been over a week and she is running strong, back to normal fuel consumption.  
Franklin buncher and skidder
JD Processor
Woodmizer LT Super 70 and LT35 sawmill, KD250 kiln, BMS 250 sharpener and setter
Riehl Edger
Woodmaster 725 and 4000 planner and moulder
Enough cows to ensure there is no spare time.
White Oak Meadows

Offline YellowHammer

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Re: Kohler is sick
« Reply #26 on: July 21, 2021, 12:12:09 AM »
 smiley_thumbsup

YellowHammerisms:

Take steps to save steps.

If it wonít roll, its not a log; itís still a piece of tree.  Sawmills cut logs, not pieces of trees.

Kiln drying wood: When the cookies are burned, theyíre burned, and you canít fix them.  Donít burn the cookies.

Offline newoodguy78

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Re: Kohler is sick
« Reply #27 on: July 21, 2021, 12:15:41 AM »
Good deal 

Offline Bruno of NH

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Re: Kohler is sick
« Reply #28 on: July 21, 2021, 05:38:19 AM »
Nice
Lt 40 wide with 38hp gas and command controls , F350 4x4 dump and lot of contracting tools


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