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 03-26-2008, 13:47 Post: 152441
8x56mn



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 Kubota Tractor Engine noise

The other day while loading wood into my FEL bucket with the engine on fast idle the engine made a funny noise like when you hear the jake brake on a big rig. It only lasted a second and hasn't done it since. Could this be a indication of pending doom or could it be a drop of water going through the injectors?






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 04-05-2008, 10:41 Post: 152759
Art White



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 Kubota Tractor Engine noise


Did it smoke when it did it?






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 04-05-2008, 11:47 Post: 152761
auerbach



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 Kubota Tractor Engine noise

Sure it wasn't the cooling system?






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 04-07-2008, 09:53 Post: 152797
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 Kubota Tractor Engine noise

Hmmm, I missed this one first time around.

The only time I've heard a funny noise like that was when it was purging air from the injector lines or the injection pump cavitating just before running out of fuel.

Assuming the tank wasn't empty, I'd be looking at fuel starvation issues, debris in the tank, fuel filter, fuel separator, etc. cutting off the flow.

Best of luck.






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 04-07-2008, 10:22 Post: 152798
8x56mn



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 Kubota Tractor Engine noise

Yes I was thinking of that also. It has not done it since, so was hoping it was water.






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 04-07-2008, 12:19 Post: 152801
Murf

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 Kubota Tractor Engine noise

I doubt it was water, certainly not if the water was at the injectors.

Water is too large to pass the injectors without some chemical help to break up the droplet size. That is one of the big problems with water in the fuel, it can build up to the point it ruins the pump because the pressure gets too great.

Better safe than sorry, spend a few minutes checking / draining the likely spots in the fuel system, tank, filter, separator, etc., and you may save a lot of time, frustration and possibly money down the road.

Best of luck.






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 04-08-2008, 11:04 Post: 152833
8x56mn



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 Kubota Tractor Engine noise

How does one drain the tank anyway and is the fuel filter and or water seperator in the engine compartment? Pardon my ignorance this is the first deisel that I have ever owned.






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 04-08-2008, 23:37 Post: 152842
cthonestguy

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 Kubota Tractor Engine noise

Not to doubt what you heard but were you hand loading wood into the loader bucket or driving into the pile? Could it have been a log rubbing against the cutting edge?






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 04-09-2008, 08:09 Post: 152843
auerbach



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 Kubota Tractor Engine noise

Some things you really need to know, others not so much. I've not drained my tank in 35 years of ownership, but I've never started for the day without checking the fuel bowl. (Full? Water? Sediment?)






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 04-09-2008, 09:41 Post: 152844
Murf

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 Kubota Tractor Engine noise

First off, there's no need to drain the tank. A good flashlight in the filler cap (especially at night since the daylight makes it hard to see) will light up any water drops or debris in the tank. If there is water, use a water absorbing gadget they sell for snowmobiles in the tank. It is a small plastic mesh tube filled with special crystals that absorbs water not fuel.

Secondly, the fuel / water separator is usually a clear cup looking arrangement on the side of the engine block. Depending on your model there may be a draincock on the bottom, or it may screw off. In either case, since fuel & water don't mix any water in the bottom will be clearly visible.

Best of luck.






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