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Mistakenly put diesel fuel into a gas lawn mower #4497018
08/24/17 01:04 PM
08/24/17 01:04 PM
Joined: Feb 2005
Posts: 300
TX
handyman Offline OP
handyman  Offline OP
Joined: Feb 2005
Posts: 300
TX
My neighbor mistakenly put diesel fuel into a new Kubota riding lawn mower that would normally require gasoline. We drain the fuel tank and replaced the fuel filter. I shot starter fluid down the carb and it smoked the yard. It would not continue to run. The fuel filter did not look like it was getting any gas. He had to leave on a trip and we are going to work on it this weekend. Any suggestions on fixing this issue.


2011 Prius III 111k
2006 Senna LE 160k
2001 Saturn L100 200k
1993 Corolla LE 200k
Re: Mistakenly put diesel fuel into a gas lawn mower [Re: handyman] #4497028
08/24/17 01:11 PM
08/24/17 01:11 PM
Joined: Jul 2005
Posts: 31,005
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 31,005
NY
Flush out the fuel tank, drop the carb bowl and empty it. Then disconnect the fuel line from the carb and flush the carb out with some carb cleaner. Put it together add some fresh gas, change or clean the spark plug and give it a try. You might need a bit of ether/starting fluid to get it running.


God Bless Our Troops

Re: Mistakenly put diesel fuel into a gas lawn mower [Re: handyman] #4497038
08/24/17 01:16 PM
08/24/17 01:16 PM
Joined: Oct 2011
Posts: 5,091
USA
NHGUY Offline
NHGUY  Offline
Joined: Oct 2011
Posts: 5,091
USA
Change the plug,its going to have a big ball of carbon on it.

Re: Mistakenly put diesel fuel into a gas lawn mower [Re: handyman] #4497051
08/24/17 01:29 PM
08/24/17 01:29 PM
Joined: Sep 2015
Posts: 1,601
USA
mk378 Online content
mk378  Online Content
Joined: Sep 2015
Posts: 1,601
USA
You'll have to clear the fuel line and the carb. Most of the time there is a nut on the bottom of the carb bowl, loosen it holding a container underneath and let it drain. Remove the spark plugs, you will need to clean them, and with the plugs out the engine will spin faster in the next step. Disconnect the fuel hose input to the carb and hold it on a container, turn the key and crank until clean gas (that you have poured into the tank) comes out. Then tighten the nut, reattach the line, crank to fill up the bowl, reinstall plugs, and start.

Last edited by mk378; 08/24/17 01:30 PM.
Re: Mistakenly put diesel fuel into a gas lawn mower [Re: handyman] #4497113
08/24/17 02:46 PM
08/24/17 02:46 PM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline
Joined: Sep 2016
Posts: 1,418
Minnesota
mk378 described the way I would attack the issue.
Attach a label close to the filler "Gas only"

Last edited by bioburner; 08/24/17 02:48 PM.


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Re: Mistakenly put diesel fuel into a gas lawn mower [Re: handyman] #4497348
08/24/17 08:21 PM
08/24/17 08:21 PM
Joined: Dec 2009
Posts: 5,178
Tn.
CourierDriver Offline
CourierDriver  Offline
Joined: Dec 2009
Posts: 5,178
Tn.
My best answer,,,,don't do thattttttttttttttt anymore. thumbsup True story:Buddy of mine goes for a ride on his motorcycle,,stops, fills it up, not paying attention puts diesel in it,,,,why,,,I do not know,,,starts the engine and gets about 10 feet....after he gets it to the shop the next day, the bill was 150 to fix the mess..lol

Last edited by CourierDriver; 08/24/17 08:24 PM.

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Re: Mistakenly put diesel fuel into a gas lawn mower [Re: demarpaint] #4497445
08/25/17 01:07 AM
08/25/17 01:07 AM
Joined: Dec 2009
Posts: 26,267
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline
Joined: Dec 2009
Posts: 26,267
Regina, Saskatchewan, Canada
Originally Posted By: demarpaint
Flush out the fuel tank, drop the carb bowl and empty it. Then disconnect the fuel line from the carb and flush the carb out with some carb cleaner. Put it together add some fresh gas, change or clean the spark plug and give it a try. You might need a bit of ether/starting fluid to get it running.

This. That's pretty much what I did some years ago when my younger brother put diesel in the gasoline rototiller. wink It smoked a bit, of course, too, until things were normal again.


Plain, simple Garak.

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Re: Mistakenly put diesel fuel into a gas lawn mower [Re: handyman] #4497616
08/25/17 08:25 AM
08/25/17 08:25 AM
Joined: Apr 2014
Posts: 624
MN
ironman_gq Offline
ironman_gq  Offline
Joined: Apr 2014
Posts: 624
MN
Shouldn't have done any real damage, just get it flushed out and change the spark plug. Might smoke a bit if it ran at all with the diesel until any in the muffler gets burned off.

Re: Mistakenly put diesel fuel into a gas lawn mower [Re: ironman_gq] #4497641
08/25/17 09:12 AM
08/25/17 09:12 AM
Joined: Apr 2010
Posts: 4,565
Storrs, Connecticut
jeepman3071 Offline
jeepman3071  Offline
Joined: Apr 2010
Posts: 4,565
Storrs, Connecticut
Originally Posted By: ironman_gq
Shouldn't have done any real damage, just get it flushed out and change the spark plug. Might smoke a bit if it ran at all with the diesel until any in the muffler gets burned off.


This.

Diesel in a gas engine just makes a mess of the fuel system but won't cause any real damage. Gas in a diesel is where you get damage.


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Re: Mistakenly put diesel fuel into a gas lawn mower [Re: handyman] #4501228
08/29/17 10:44 AM
08/29/17 10:44 AM
Joined: Feb 2005
Posts: 300
TX
handyman Offline OP
handyman  Offline OP
Joined: Feb 2005
Posts: 300
TX
Well, I talked with his wife. He is going to have the Kubota dealer work on it. They say it is fuel injected and needs a special flush to clean it out. 250 bucks and they can get to it in a week or so.

I offered to work on it for him but I think he just wants the dealership to work on it.

Some people are just not mechanically inclined.


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2006 Senna LE 160k
2001 Saturn L100 200k
1993 Corolla LE 200k

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