I have a new 5205 with 7 hours on it. After I have warmed up the tractor and it is at normal temp and I have it in netural with no load and I put it at full throttle it starts to belch out white smoke and spit and sputter. I don't know if I have a timing problem, bad valves. or dirty injectors. I sure would like some input from a diesel mechanic or a least someone who has had the same problem or even a wild guess. P.S. Any throttle position less than full it seems to run fine.
Oil & Fuel need help with rough running diesel
- Thread starter jpig
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beenthere
Super Star Member
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I'd get it back to the dealer quickly, if mine. Not something I would mess with as it will be under warranty.
I'd consider the fuel source as well, and being sure I didn't add something strange to the tank since bringing it home.
Good luck.
I'd consider the fuel source as well, and being sure I didn't add something strange to the tank since bringing it home.
Good luck.
I would bet that it is your fuel filter. My trucks will do the same thing when I need to change their fuel filters. They also start quicker after changing the fuel filters. You might also look for water in the fuel filter canister or bad fuel when you change the fuel filter element.
KennedyDiesel
Veteran Member
Fuel filter, and fuel quality would be my checks. One thing that I've found is that the first filter change should be early. Tanks, hoses etc can attract and collect dust and dirt.
I'd also verify that the fuel lift (supply) pump if so equipped is working as air entering the system can do the same.
I'd also verify that the fuel lift (supply) pump if so equipped is working as air entering the system can do the same.
SnowRidge
Elite Member
<font color="blue"> After I have warmed up the tractor and it is at normal temp and I have it in netural with no load and I put it at full throttle it starts to belch out white smoke and spit and sputter. </font>
Full throttle at no load? Assuming it runs fine at full throttle under load, there may be nothing really wrong.
It sounds like you are getting excess fuel. If enough of an excess is injected into the cylinder, it can have a quenching effect, and the engine will run rough and produce white smoke. It may be as simple as the injection pump not being able to deliver a precise enough charge at WOT without a load. Still, I'd check with the dealer, and see what he says.
And I would also try and check with owners of identical models.
Full throttle at no load? Assuming it runs fine at full throttle under load, there may be nothing really wrong.
It sounds like you are getting excess fuel. If enough of an excess is injected into the cylinder, it can have a quenching effect, and the engine will run rough and produce white smoke. It may be as simple as the injection pump not being able to deliver a precise enough charge at WOT without a load. Still, I'd check with the dealer, and see what he says.
And I would also try and check with owners of identical models.
KennedyDiesel
Veteran Member
I would think it should be somewhat broken in when delivered (test run etc) but if you loaf around with it too much you can wash/glaze the cylinders. I always like to put a good stout load on for short to moderate periods of time with a brief period of no load to wash way the machinings from break in and then load it again. This helps seat the rings. So often guys rebuild in fall/winter and then run the tractor on spreader duty in the winter which does not put suficient load on it...
I'd still look to fuel quality, filter flow, air leaks, etc.
Could also be sticky pump advance, but I have zero experience with the fuel system on that model.
I'd still look to fuel quality, filter flow, air leaks, etc.
Could also be sticky pump advance, but I have zero experience with the fuel system on that model.
EquipmentJunkie
Platinum Member
Since it has less than 10 hours on it, I agree that the dealer should look at it. It is probably something simple, but get a paper trail started with the service department of your dealer if the problem turns out to be something more serious. The paper trail makes things simpler if warranty work needs to be performed.
