Go BottomL245DT wouldn t start
 | toolshedj
Join Date: Jul 2004 Posts: 5 arkansas 
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2004-07-12 90707
I was bushogging the other day with my L245Dt Kubota.It was hot ( in the 90's), and I had been running it pretty much non-stop for about 6 hours.I hit a log or something with the bushog which made the tractor die.When I went to start it, it turned over a couple times then wouldn't start. It acted kind of like a low battery.I let the tractor sit for 10 -15 minutes and it started normally. I wonder if I got it too hot ?
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
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2004-07-13 90745
It sounds like that's what happened. An engine does get hotter for awhile after it's shut down. The effect is much greater when doing heavy work on hot days and the shut down is immediate. It's probably best to avoid heavy work on really hot days and to idle an engine for awhile before shutting it down. Of course that's not going to work if something is hit and the engine kills.
There's probably no damage but it's not a good thing to happen. I'd stay close the manufacturer oil weight recommendations for those temperatures and check the rad screen frequently when mowing on hot days. ....
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 | Chief
Join Date: Jul 2003 Posts: 4297 Southwest MiddleTennessee
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2004-07-13 90752
This is a long shot and take as such. I doubt the engine shut down due to overheating. Were that the case you would have experienced other more telling symptoms such as the radiator boiling over, blowing a hose, or worse yet a blown head gasket. A diesel actually prefers higher temps. which aid the combustion process. You mention that you hit a log or something. The L245 has a compression release for aiding cold starts. My suspicion is that you or something may have unknowingly and momentarily pulled the compression release during the rustling around on the bump and that killed the engine immediately. If the engine runs fine now and the engine oil looks good, that is all that comes to my mind. At least that is my story and I am sticking to it. ;o) ....
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 | Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
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2004-07-13 90753
Chief, don't get on the world poker tour! I think they would see you coming! Good call on the heat but there are times to much of a good thing will get you. ....
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| Chief
Join Date: Jul 2003 Posts: 4297 Southwest MiddleTennessee
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2004-07-13 90755
I do have my notable moments don't I Art? LOL! ;o) ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2004-07-13 90813
If you have a moment it might be worthwhile to explain the slow starter turnover immediately after the shut down, which cleared in 10-minutes or so. I was assuming the stall was caused by hitting a stump rather then from over-heating but that the operating temperature may have been on the high side. The coolant level wasn't mentioned.
I have no particular investment in my long shot and it is a long shot. A better explanation should use all elements of the problem described. Hot engines do crank slow. A cracked compression release that causes a stall and then resets itself also seems quite a stretch. There are likely better shots then these. ....
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| toolshedj
Join Date: Jul 2004 Posts: 5 arkansas
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2004-07-15 91024
The coolant level was ok. ....
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| cthonestguy
Join Date: Jun 2004 Posts: 267 northeast
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2004-07-15 91041
This happens on some machines and if you hit something while you had very strong traction it could have simply shut you down and the fule flow going in didn't have a chance to be used and it remained in the cyl's thus creating more compression and slowing down the turn over. I have had a few engines in the past that when you hit something hard enough to almost cut it out the engine will start to die but fuel will still be flowing. sometimes they spit and sputter then clear out, other time they shut down and take a while to get started. I did this with my L175 a couple of times. It too had a compression release but I was sure it didn't open. ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2004-07-16 91052
That sounds like decent theory. None of the explanations sounds like a problem or damage to the machine so I hope that makes everybody feel better.
The slow crank thing did seem to happen on my riding mower (air-cooled gas engine). It doesn't do it much now since I repaired a seriously corroded battery terminal. The battery still is a dog. My wife blew a head gasket last summer due to a slow rad hose leak and not watching the gauge. I was along for a ride once and didn't recognize the sound of boiling in the water jackets after she turned it off. It didn't overflow or blow a hose but the coolant was low, and it probably sat long enough to cool down before it was started again. I'm pretty sure I remember '50's 6V cars cranked slow if they were shut down hot and then restarted again. But, these weren't tractor diesel engines and this explanation sounds like a better one. ....
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