Kubota L6060 Engine failure

[RickB]

If its a normal system you have stored fault codes in the ecu.

Fuel pressures at cranking speed, supply pressure, injectors are fired electronically. Are they being told to open? etc. There is more info than you suspect.

 

[Username Taken]

They need to get a qualified tech to check it out. THIS says it's a common rail system.

Good luck

 

[SDT]

Is it possible the dealership your using is simply replacing parts without "really" knowing what's wrong, only to have you pay for the parts and guess work along the way?

Sorry to hear of your troubles. Your the first I've heard of for having major issues with your Kubota and I hope this dealer and or Kubota throws you a bone and accepts some level of responsibility.

Not at all uncommon but I would expect no help from either Kubota or the dealer if it's out of warranty.

SDT

 

[JethroB]

Is there any distinction between a technician and a mechanic at dealerships these days?

 

[AKForest]

This is in response to many of your comments. I did not want to get to wordy when I began this thread, so I did not include all the information. With the engine cranking, there was no output from the injector pump. The rail pressured up with the new injector pump. Then they discovered that the voltage delivered to the injectors by the ECU was insufficient to open the injectors. The mechanic at the dealership called a Kubota Tech who talked to a kubota engineer. They concluded that the ECU was faulty. The ECU was replaced. The new ECU delivered the correct voltage to the injectors. The tractor still did not start. Now they suspect the injectors. Testing these specialized injectors requires sending them out of state and will take a month. I can't afford this. I have appealed to Kubota for relief. I feel that the failure of these three major components simultaneously points to faulty parts, assembly problems and/or poor design. I am just reaching out to see if other owners have had similar problems.

 

[AKForest]

In reply to RickB, no codes showed up on the dash when the problems first occurred. Apparently, no codes appeared when the tech. put the tractor on the computer at the dealership. The tech. at the dealership was quite surprised that the ECU did not contain more information. He said that, on most other equipment they had, the ECUs stored all kinds of data.

 

[RickB]

In reply to RickB, no codes showed up on the dash when the problems first occurred. Apparently, no codes appeared when the tech. put the tractor on the computer at the dealership. The tech. at the dealership was quite surprised that the ECU did not contain more information. He said that, on most other equipment they had, the ECUs stored all kinds of data.

That in itself would head in the direction of a failed ECU. Which MAY have compromised the injectors. But the mechanical failure of the high pressure pump would not necessarily be tied into the electronic issues.

 

[arto98607]

Sad story, I wish it somehow will have a satisfactory ending but have my doubts.

One thing for sure, I will stay with my 1986 all mechanical fuel injection Ford 1310 as long as possible.
I've owned it for 23 years and so far no need to open up the fuse box cover.

Parts availability will eventually become a problem but so far so good.

Cheers

 

[Cahaba Valley Farm]

I can't afford this. I have appealed to Kubota for relief. I feel that the failure of these three major components simultaneously points to faulty parts, assembly problems and/or poor design. I am just reaching out to see if other owners have had similar problems.

All I can say is I wish you the best. Let me know how that works out for you :laughing:

 

[AKForest]

In reply to Rustyiron, the injector pump solenoid is complicated. The ECU adjusts the pressure produced by the pump by adjusting the solenoid electronically from input provided by a sensor on the rail.