kubota heavy black smoke

[MHarryE]

Crankcase ventilation - what system does your tractor have and is it clear? Similar failure on my newer engine caused by blocked crankcase vent, replaced under warranty by Kubota.

 

[krazy101]

jerry/mt- I hear what your saying, turbo is new only maybe 4 to 6 hrs on it by test driving/mowing/diagnosing etc. I installed new turbo via all manf recommendations. Could still be bad but i lean away from that right now. There is no oil going to the exhaust side of the turbo. only a excess fuel or fuel oil mix in the compressor/air intake side. Coolant temp stays in normal range.

 

[krazy101]

MHarryE- I was thinking the same thing you said crankcase ventilation going to check that out today or monday and report back.

 

[Snobdds]

Sounds like you might have a sticky injector...

If it was a truck, I'd say run a balance and contributioin test, but I'm not 100% sure if your engine is mechanical or has some PCM to it.