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Kohler Command Pro EFI No Start
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injpumpEd View Drop Down
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 5060 		Post Options Post Options   Thanks (0) Thanks(0)   Quote injpumpEd Quote  Post ReplyReply Direct Link To This Post Topic: Kohler Command Pro EFI No Start
    Posted: 23 May 2020 at 1:32pm
does anyone have any experience with these?Pro EFI ECH 740 V-Twin in a Vermeer CTX 50 Mini track skid steer? My Daughter's rental fleet has 2 of them, and one runs great, and is out on rent every day. The second one will not fire, unless you feed it ether, but only runs on that. When running on the ether, it sounds fine, has spark, just doesn't seem to be getting fuel through the EFI system. My though was that it's a sensor for oil pressure or level. But in my past experiences with small engines, those switches cut off the ign. Could be an O2 sensor or ?? Figure this page has so many extremely knowledgeable members, and that engine is used in many mowers, that someone has bound have run into this before. Thanks in advance for any info anyone could provide!
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Todd AL View Drop Down
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Joined: 13 Dec 2009
Location: Alabama
Points: 177 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Todd AL Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2020 at 5:24pm
Fuel pump running? Check that first.
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Todd AL View Drop Down
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Joined: 13 Dec 2009
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Points: 177 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Todd AL Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2020 at 5:27pm
https://kohlerpower.com/en/engines/troubleshooting-command-pro-efi-gasoline
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injpumpEd View Drop Down
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 5060 		Post Options Post Options   Thanks (0) Thanks(0)   Quote injpumpEd Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2020 at 6:05pm
Originally posted by Todd AL Todd AL wrote:

Fuel pump running? Check that first.

They replaced the mechanical one that runs off the valvetrain I guess. 
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Dakota Dave View Drop Down
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Joined: 12 Sep 2009
Location: ND
Points: 3964 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dakota Dave Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2020 at 11:44pm
Check the fuel stop solenoid should be on the carb and click when you turn he key to run click again when you turn the key off. That's my guess anyway. I guess I should have said it on the side of the throttle body since it not really a carb just kinda looks like one.

Edited by Dakota Dave - 25 May 2020 at 11:46pm
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modirt View Drop Down
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Joined: 18 Jul 2018
Location: Missouri
Points: 8210 		Post Options Post Options   Thanks (0) Thanks(0)   Quote modirt Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2020 at 8:09am
My zero turn mower has a Kohler engine with EFI.......has been in the shop twice for similar reasons, and both times, it was electrical. First time, they eventually found a short......2nd time, ground wire had worked loose.

FWIW, mower I have was offered with 3 different engine options......Briggs, Kohler and Kawasaki. I asked and was told they see more of the Kohler engines back in for service than the other two combined. Never anything major, but if it won't start and run when you depend on it, it's major.
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HudCo View Drop Down
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3765 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2020 at 10:55pm
all the kolher commands efi  that have been threw have had very little troble it should have and electric pump and have you checked the fuel injector with a led test light
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