Jump to content

Nominations for Tractor of the Month
Garden Tractors and Parts on eBay



Photo
- - - - -

Kohler Courage 23Hp, Surges Then Dies....help


  • Please log in to reply
18 replies to this topic

#1 tweidman OFFLINE  

tweidman

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 5
  • 250 Thanks
  • 797 posts
  • Location: Ackermanville,Pa

Posted August 05, 2014 - 08:27 AM

I have a Cub 1050 that came with a Kohler Courage 23hp engine. It has about 390 hours on it.

 

When I mowed with it last week, after about 2 hours the engine started to surge. I throttled it down and it shut down and then would not start. I figured it might be a fuel problem so I sprayed some starting fluid in the air cleaner opening, but that did not help.

 

I checked for fuel and when I pulled the line from the carb, fuel poured out.

 

(Then, it sat for a week while I was on vacation)

 

The next thing I decided to check was the fuel shut off solenoid. I had 12 volts to the solenoid and when I turned the key I could hear it pick up. So, I tried to start it and it fired right up like nothing was wrong.

 

The next day I mowed, 2 hours into mowing, the engine started to surge again, I left it WOT this time. It continued to surge periodically (less when under load), then after about 5 minutes it shut down and would not start again. I turned the key and I could hear the solenoid pick up, but it seemed more faint.

 

Is this the solenoid? If so, is there any way to test it? Or, am I barking up the wrong tree? Any ideas on what would cause it to consistantly quit after 2 hours of running fine? HELP.

 

I am assuming it has to be a fuel issue. My thinking: If the timing was off, it would not run at all, if it was a spark issue, it would still run on one cylinder because it has two coil packs.


Edited by tweidman, August 05, 2014 - 09:28 AM.


#2 boyscout862 ONLINE  

boyscout862
  • Senior Member
  • Member No: 8923
  • 9,770 Thanks
  • 7,537 posts
  • Location: N.E. Connecticut

Posted August 05, 2014 - 09:38 AM

Try the fuel tank cap. If the vent is plugged it will drive you crazy with symptoms like that. Good Luck, Rick



#3 JDBrian OFFLINE  

JDBrian

    Super Moderator

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2507
  • 9,574 Thanks
  • 14,136 posts
  • Location: Hubley, Nova Scotia - Canada

Posted August 05, 2014 - 10:49 AM

If it surges and quits on you again try to get the plugs out and read them. If they are wet it could be a spark issue. Could also very well be that solenoid breaking down when hot.



#4 MH81 ONLINE  

MH81

    Proud to be Deplorable

  • Staff Admin
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 802
  • 27,281 Thanks
  • 28,615 posts
  • Location: N. W. PA

Posted August 05, 2014 - 11:06 AM

Todd, I take those tips off the solenoid when I have them out. The tank is downhill, right?
  • tweidman said thank you

#5 tweidman OFFLINE  

tweidman

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 5
  • 250 Thanks
  • 797 posts
  • Location: Ackermanville,Pa

Posted August 05, 2014 - 08:33 PM

Todd, I take those tips off the solenoid when I have them out. The tank is downhill, right?

 

What do you mean the "tank is downhill"?

 

The tractor is pointed down hill right now and when it quit.

 

I tried to start it tonight and gas was coming out of the exhaust.....WTH?


Edited by tweidman, August 06, 2014 - 02:23 PM.


#6 MH81 ONLINE  

MH81

    Proud to be Deplorable

  • Staff Admin
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 802
  • 27,281 Thanks
  • 28,615 posts
  • Location: N. W. PA

Posted August 05, 2014 - 09:30 PM

I mean is the tank lower than the carb on level ground?

Follow the fuel line and see if the line is laying on the tranny. If its getting hot, it may be vapor locking

#7 tweidman OFFLINE  

tweidman

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 5
  • 250 Thanks
  • 797 posts
  • Location: Ackermanville,Pa

Posted August 06, 2014 - 02:26 PM

I mean is the tank lower than the carb on level ground?

Follow the fuel line and see if the line is laying on the tranny. If its getting hot, it may be vapor locking

 

Since I have gas running out of the muffler now (while I crank it), I don't think it's vapor lock. Something is not right in my carb? I will try and get to it tonight and see if I can figure it out.



#8 tweidman OFFLINE  

tweidman

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 5
  • 250 Thanks
  • 797 posts
  • Location: Ackermanville,Pa

Posted August 06, 2014 - 07:49 PM

When taking the carb off, I realized that this thing flooded itself to the point of being ridiculous. I took the bowl off cleaned everything, checked the float and seat and did not find and issue. I put i back together and it started and ran great.

 I started to mow and 20 minutes later it shut down again. When I tried to start it I saw flames it the muffler. I am guessing that means it flooded again.

 I don't get it? I have never had a carb do this, is it just that stupid solenoid? I don't see how it could be?


Edited by tweidman, August 06, 2014 - 07:59 PM.


#9 DH1 OFFLINE  

DH1

    Electric Tractors

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 62
  • 4,587 Thanks
  • 5,295 posts
  • Location: Markham Ontario Canada

Posted August 06, 2014 - 07:52 PM

Some dirt in the fuel line from the carb to where ever it goes. ???


Edited by DH1, August 06, 2014 - 07:53 PM.


#10 tweidman OFFLINE  

tweidman

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 5
  • 250 Thanks
  • 797 posts
  • Location: Ackermanville,Pa

Posted August 07, 2014 - 08:42 AM

Some dirt in the fuel line from the carb to where ever it goes. ???

 

 It has a brand new fuel filter and the fuel line is in great shape.

I just don't understand how it can run for 2 hours and run perfect, then suddenly have a problem.

Then, after sitting, run fine again?

 

I would just replace the carb, but I don't see any problems with the carb, so I'm not sure that is going to help?



#11 sacsr OFFLINE  

sacsr

    Bush Hog Addict

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 4776
  • 3,268 Thanks
  • 3,283 posts
  • Location: Eastern NC

Posted August 07, 2014 - 09:09 PM

Todd hope you get it figured out! Sorry I am no help with your issue.

#12 tweidman OFFLINE  

tweidman

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 5
  • 250 Thanks
  • 797 posts
  • Location: Ackermanville,Pa

Posted August 08, 2014 - 08:40 AM

Todd hope you get it figured out!

 

Yeah, me too. This thing is driving me crazy. This is only a simple small engine, it really shouldn't be so difficult.....



#13 tweidman OFFLINE  

tweidman

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 5
  • 250 Thanks
  • 797 posts
  • Location: Ackermanville,Pa

Posted August 14, 2014 - 07:40 AM

I think I found the problem? I was able to cut the entire yard and run it for 3 hours straight without a problem last night.

 

As it turns out, two missing muffler bolts seems to heve beeen the only issue.

Because the muffler is just below the carb on this machine, the loose muffler was causing the hot exhaust to blow (leak) against the carb. I am not sure if it was causing the solenoid to become weak or whether it has vapor lock or something at the fuel line or carb.?

 

This also explains why it ran for such a short period when I was running it without the shrouds and heat shields.


  • MH81, boyscout862 and New.Canadian.DB.Owner have said thanks

#14 tweidman OFFLINE  

tweidman

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 5
  • 250 Thanks
  • 797 posts
  • Location: Ackermanville,Pa

Posted August 25, 2014 - 09:36 AM

Back to square one. Last week it stopped running after two hours again and it will not re-start.

I have good spark but it seems to be flooding out. I can't imagine that little fuel pump can be causing the flooding?

I guess I am going to try a new carb, since I have had the current carb apart and could not find a problem with it.

 

I hope I am not wasting my money?



#15 boyscout862 ONLINE  

boyscout862
  • Senior Member
  • Member No: 8923
  • 9,770 Thanks
  • 7,537 posts
  • Location: N.E. Connecticut

Posted August 26, 2014 - 07:09 AM

I've got to suspect the float or its valve. The float could be sinking. There could be a problem with the float valve seat where it can't seal in certain positions. Good Luck, Rick


  • tweidman said thank you




Top