off color Kubota MX5200
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=183973
Printed Date: 27 Jul 2025 at 2:11pm
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Topic: off color Kubota MX5200
Posted By: Tracy Martin TN
Subject: off color Kubota MX5200
Date Posted: 17 Oct 2021 at 6:39pm
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Friend has a Kubota MX5200. Engine ran away and he could only stop it by putting PTO in gear and getting off of seat. Won't start now, it turns over and seems to have compression. Pump has a electric solenoid on it, it like rail system fuel delivery. Anyone out there have an idea what went wrong? Thanks, Tracy ------------- No greater gift than healthy grandkids! |
Replies:
Posted By: Tbone95
Date Posted: 18 Oct 2021 at 6:34am
| No, but why would you try to start it if you don't know why it ran away? Is....the pto off now? |
Posted By: DiyDave
Date Posted: 18 Oct 2021 at 6:01pm
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If an oil seal blew in the turbo, if so equipped, that is a common cause. I'd take the question to the kubota forum, link below... https://www.orangetractortalks.com/forums/" rel="nofollow - https://www.orangetractortalks.com/forums/ ------------- Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need! |
Posted By: ryan(IN)
Date Posted: 18 Oct 2021 at 6:38pm
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If he didn’t turn the pto off it won’t restart. Does the fuel solenoid move? ------------- ryan 1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62 |
Posted By: Tracy Martin TN
Date Posted: 18 Oct 2021 at 9:10pm
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Ryan, turned the pto off. I think it is a computer problem with the electronic firing of the injectors. The solenoid does shake some for a few seconds while electric lift pump does its stuff. After talking with some Kubota service techs today, I found that the wiring harness on the newer Kubota tractors have some bugs. There have been a few runaway engines on the MX5200's. The service techs seem to know very little other than wanting to swap engines. I wanted to know why this one ran away. Can't talk to anyone that has any common sense. I am going to stay after it just to have peace of mind. Yes, we are prepared to shut it off immediately if it tries another run away. Any help always appreciated. Thanks, Tracy ------------- No greater gift than healthy grandkids! |
Posted By: Tracy Martin TN
Date Posted: 18 Oct 2021 at 9:13pm
------------- No greater gift than healthy grandkids! |
DiyDave wrote:Posted By: Dusty MI
Date Posted: 19 Oct 2021 at 2:45pm
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I've never had a diesel, but was told that the easy to shut down a runaway diesel is to remove the rain cap on the air intake and put your hand over it to block off the air. That would starve it of air. I wonder how much vacuum there is, and what that would do to your hand? ------------- 917 H, '48 G, '65 D-10 series III "Allis Express" |
Posted By: JoeM(GA)
Date Posted: 19 Oct 2021 at 6:51pm
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never, never, ever use your hand, or a rag, etc. we used to keep a thick piece of plywood with a sheet of rubber on it to drop over the intake it one ran away ------------- Allis Express North Georgia 41 WC,48 UC Cane,7-G's, Ford 345C TLB |
Posted By: SteveM C/IL
Date Posted: 19 Oct 2021 at 7:29pm
| Yeah...a board not your hand |
Posted By: MACK
Date Posted: 19 Oct 2021 at 9:06pm
| 28 - 30 inches of vacuum is the most vacuum it can pull and that won't hurt your hand. I do agree a board works much better. MACK |
Posted By: AC720Man
Date Posted: 19 Oct 2021 at 9:16pm
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What causes a run away diesel? Broken fuel arm where it attaches to the throttle? Pump? You would think a computer these days would prevent it from happening. Have heard of it, but thankfully haven’t experienced it. ------------- 1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD |
Posted By: Tbone95
Date Posted: 20 Oct 2021 at 7:05am
Various reasons. As mentioned above, it frequently comes from the oil at the turbo, possibly anywhere else it could suck oil. A diesel, especially warmed up good, can run on the oil, and since it's past the pump and governor and essentially "unlimited" supply, it will run away.
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Posted By: Ray54
Date Posted: 13 Jan 2023 at 7:08pm
 Now that is tractor forum scammer if ever I saw one. Cannot tell a car from a truck or a tractor as he rambles.
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Posted By: ryan(IN)
Date Posted: 13 Jan 2023 at 7:21pm
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Especially since an Mx doesn’t have def. ------------- ryan 1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62 |