Great Lakes 4x4. The largest offroad forum in the Midwest banner

Any tune-up stuff for diesel that has sat for a few years?

2K views 15 replies 8 participants last post by  Jiveturkey3 
#1 ·
I recently got a different tractor, a Kubota L-series with a 2.2liter 4 cyl 43hp diesel. It used to belong to my Grandpa, who passed away about 5 years ago. Since then, its just sat in his garage.

It was previously used before he got it, and seems like used hard (guessing commercial, compared to home use, just seems kinda beat up). Has about 700 hours on it.

Got it started, and its all working, but seems to be running a little rough, and to me, seems a little low on power, compared to what I expected, in the mid and high range gears, driving up inclines. (We have a 29hp diesel B series and 32hp diesel L series, all are hydros, so I have decent comparisons). And running a touch rough. It does have bigger tires, so maybe the weight of the tires is sapping some power. Haven't checked if they have chloride water in them.

Any tips for tune up stuff? Seafoam in the fuel? Guessing that a new fuel filter is in order. Don't know too much about diesels, honestly. Our other Kubotas are lower hours and run perfectly.
 
#3 ·
Flush the fuel system out and install a new filter. Add some CRC Fuel Therapy or CRC Guaranteed To Pass cleaners. It'll take a while to fully run through but you should notice a positive change in power.
 
#4 ·
When I worked at the kubota dealer we always drained all the full and changed the fuel filter. That was always first and foremost. Kubotas are famous for water in the tank. We used Kubota brand fuel additive but I really like power service brand. Get the gray bottle and add it to the fresh diesel. Something you probably know, only buy diesel at a busy station. We had lots of lakers buy shit fuel from the little lake stores. If I can help with anything pm me.
 
#7 ·
Diesel 911 is a power service additive. It's their cold weather additive. The silver bottle is a cetane booster along with a "cleaner". Also that tractor doesn't have a sediment bowl really. The cup with the filter in it does not collect much of anything, at least the couple thousand I have saw didnt.

To each their own but I don't use diesel 911 unless there is actually gelling going on. Which anymore is super rare. Knowing that the silver PS stuff has a water dispersant and boost cetane I highly recomend using that. As I stated eaelier kubotas are very prone to water in the fuel.
 
#14 ·
In general, yeah, but I need to learn a bit more now that its actually mine, not one of my dad's (He has a B and an L hydro, which usually I have one at my place). I used to operate a lot of equipment when I was landscaping, but thats getting on close to 20 years ago.
 
#11 ·
Crc cleaners are just that, cleaners. I'd go for a good overall cleaning and then use a power service additive. (I do frequently use power service as well, but not as an outright cleaner, it just does not work as good.)
 
#13 ·
once you get it running good add some 2 stroke engine oil to the fuel. 1 pint per tank. i've heard from alot of diesel guys that the added lubricity helps the fuel injectors. ULSD is no where near as oily as the old diesel fuel, and can cause the injectors to bite the dust prematurely.
 
#15 ·
You are think in a vp or cp3 style system. The tractor has a rack and was designed to run ULSD. Juanita injectors are picky sons of bitches, a rebuild and pop is more than buying new ones. I would highly suggest not using 2 stroke oil instead using an additive that is designed specifically for that application and adds more lubricity than 2 stroke oil. Another issue is ash vs ash less which you didn't even mention. That a huge issue in a liquid cooled engine. The argument has always been cost of 2 stoke oil vs cost of a quality additive. In an application such as a tractor that point goes out the window.

Don't give shit advice based on your lack of knowledge on the topic. Thanks.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top