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Cold blooded snake of a kohler!


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#1 Greasy6020 ONLINE  

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Posted March 14, 2017 - 10:37 PM

So... my john Deere 300 w/ kohler k341 aqs IS A COLD BLOODED SNAKE

I had it on the battery charger for 2 days... still no go.

Gave it a shot of gas down the spark plug hole. Still no go.

It cranks nicely until it reaches top dead center of the compression stroke. It will almost stop the starter dead, then continue on and repeat...

Anyone have an idea what my problem is? It's really making me quite aggravated.

It started nice a couple days ago...

#2 secondtry ONLINE  

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Posted March 14, 2017 - 10:43 PM

Check valve adjustment/compression release


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#3 Greasy6020 ONLINE  

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Posted March 14, 2017 - 10:54 PM

Check valve adjustment/compression release


Will do, tomorrow...

Do you have specs?

#4 Cat385B ONLINE  

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Posted March 14, 2017 - 11:05 PM

http://gardentractor...service-manual/
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#5 Cvans ONLINE  

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Posted March 14, 2017 - 11:25 PM

If this motor has points check the setting. Sounds like your plug is firing too soon. Maybe a sheared flywheel key.


Edited by Cvans, March 14, 2017 - 11:26 PM.

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#6 Bill2 OFFLINE  

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Posted March 14, 2017 - 11:50 PM

get a timing light and time it with the points there is a mark on the fly wheel mark it with white paint when you get it started the white paint mark should be in the middle of hole hope this helps . if that don;t work take head off see when valve come in at tdc . that way it will tell you if you cam gear has broke tooth or jumped   best of luck :thumbs:


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#7 DH1 ONLINE  

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Posted March 15, 2017 - 01:10 AM

It's cold, hydro turns with the engine and it's cold, if it was warmer it would probably start.

 

The answer is heat, somehow try to it warm.


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#8 EricFromPa ONLINE  

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Posted March 15, 2017 - 03:22 AM

Sounds like the ACR (Automatic Compression Release) has a problem Or your valve lash it to loose.

 

ACR mechanism is made out of steel and can get fatigued and crack.Once they get a small crack they tend to bend.Easiest way to check the ACR without pulling the engine apart is to take the Cam cover off and rotate the engine over by hand untill you see it.Carefully inspect the leaver where it makes the bend they tend to crack rite in the corner which makes the steel weak and they bend down into the void in the cam.

 

ACR Could be jammed up to. Seen that happen when the spring breaks.

 

Here's a Pic.Easy to inspect and if your careful at removing the cam cover you can reuse the gasket with a little permatex. You can see the ACR and the Tappets up in there if you look close with a nice bright light.

 

IMG_20150314_161315_zpsbayoopz1.jpg

 

If you need to adjust the valves you're going to have to replace the breather gaskets.They usually leak pretty bad if you try to reuse them.Doesn't take long for those to get rock hard.That area of the engine gets pretty hot.


Edited by EricFromPa, March 15, 2017 - 03:22 AM.

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#9 chieffan ONLINE  

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Posted March 15, 2017 - 07:17 AM

Are you sure your battery is good?  May not be taking a full charge and don't have the CCA it should have.  Also like DH1 said warm it up - direct a portable forced air heater at it for a while to get everything warm, especially the engine block and the hydro unit.  Good luck.


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#10 Greasy6020 ONLINE  

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Posted March 15, 2017 - 08:16 AM

Thanks guys... I'm gonna try being Relatively optimistic, and try warming up the motor and rear end.

If that doesn't work, I'll probably repower that jd... I kinda like it.
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#11 LilysDad OFFLINE  

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Posted March 15, 2017 - 08:23 AM

If that doesn't work, I'll probably repower that jd...

 

Repower? This would be your chance to make that engine better than it ever was. Have you ever read the Killer Kohler website?

 

http://www.kirkengin...KohlerPartI.pdf


Edited by LilysDad, March 15, 2017 - 08:25 AM.

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#12 Greasy6020 ONLINE  

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Posted March 15, 2017 - 08:39 AM

Repower? This would be your chance to make that engine better than it ever was. Have you ever read the Killer Kohler website?

http://www.kirkengin...KohlerPartI.pdf


I have now...

That looks a little beyond my scope. Guy I know works at a shop, deals with motors etc, gonna have to talk to him

#13 64fleetside ONLINE  

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Posted March 15, 2017 - 09:04 AM

Toss an electric heater or droplight under it and a tarp over the top. In a pinch i have used a 1500 watt hair dryer.
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#14 SimplyRad OFFLINE  

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Posted March 15, 2017 - 10:08 AM

Repower? This would be your chance to make that engine better than it ever was. Have you ever read the Killer Kohler website?

 

http://www.kirkengin...KohlerPartI.pdf

I need to rebuild a K301 but not sure my budget can even handle a normal rebuild. Interesting article.


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#15 skyrydr2 OFFLINE  

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Posted March 15, 2017 - 11:17 AM

Eric from PA is probably right on this one! Valve adjustment could be off or damaged ACR.
If that ACR doesn't work it will not start! Not even hot!
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