Farmall 75a low power

wango tango · Nov 14, 2023

My 2022 Farmall 75a with 143 hours is having an issue where it seems very low on power. It runs fine but at WOT it will not come up to speed when I’m higher gears. At 0 mph it revs to redline/WOT almost immediately. When in high range it is slow and won’t pull even the slightest grade without bogging even further

I just changed both fuel filters.

Any thoughts??

LouNY · Nov 14, 2023

How's the air filter?
Did it pull the hills better previously?
What shape is the DOC or DPF in?

wango tango · Nov 14, 2023

Air filter is very clean.

Doesn’t have a DPF.

Not talking about a hill. I’m talking about the most slight grade detectable. Even flat or downhill it’s bad. It used to be fine. I could put it in the highest gear and go wide-open the throttle.

K5lwq · Nov 18, 2023

I would suggest taking it to your dealer and ask them to check it out. It should be under warranty and they likely have a PTO dyno they can use to load the engine.

wango tango · Nov 19, 2023

That’s what I am going to do. Just was hoping for something easy so I didn’t have to

stumblinhorse · Nov 19, 2023

Is it bogging or just not accerating? If you feather the clutch does it quickly accelerate?

5030 · Nov 19, 2023

wango tango said:
Doesn’t have a DPF.

I'd be willing to bet it has a SCR unit however. That is the issue with newer units.. If it has issues, only the dealer can diagnose them and or repair them. 2022 units will all have some sort of emissions mitigating devices on them.

Why I'll never own one. Bad enough dealing with emissions compliant cars and light trucks today.

I will say that keeps my Kubota dealer busy all the time. Very little mechanical issues, lots of emissions related issues and the mechanical issues all seem to be from owner abuse like not checking lubricant levels or running the engine out of coolant.

Kubota addressed most of the fuel related issues with the common rail engines by installing at the factory, a dedicated fuel polishing unit. I believe they are 5 micron pass though I've not looked at a filter element. Common rail high pressure injection are all very touchy when it comes to clean diesel fuel that is not only trash free but microbe free as well.