Rough Running BX

[shadowshack]

I'll give you something else to think about. I had the same intermittent problem with the engine bogging down. Sometimes it would take fifteen minutes of work, at other times it wouldn't occur even after a day's work. My Kubota dealer's mechanic said mine was from the emergency brake not fully releasing. I argued the point, not understanding how it would continue to bog down, try to recover, bog down, and so on, for ten minutes or more, even with the brake off and engine in neutral. Lo and behold, my BX25 is running like a champ so far. I guess I should emphasize, "so far." I'll continue to follow this thread and report if it reoccurs.

 

[JnDPgh]

I had a similar issue with my B8200 where it would run fine for 20-30 minutes then begin to run rough and stall. The reason for my issue was that a small crack in one of the rubber lines that lead from the fuel tank down to the injectors. Once the fuel in the lines had been used it began to suck air through that crack leading the engine to run rough and stall. Replacing that rubber line solved my issue.

 

[JWR]

I had a similar issue with my B8200 where it would run fine for 20-30 minutes then begin to run rough and stall. The reason for my issue was that a small crack in one of the rubber lines that lead from the fuel tank down to the injectors. Once the fuel in the lines had been used it began to suck air through that crack leading the engine to run rough and stall. Replacing that rubber line solved my issue.

See thread at "bx2200 runs rough when it gets hot"
http://www.tractorbynet.com/forums/kubota-owning-operating/248308-bx2200-runs-rough-when-gets.html Several good ideas (including this one about the rubber lines) are shown there plus my own example case with a BX2200 which had these symptoms. Obviously quite a few folks have had this and similar issues.

 

[JoeP19934]

I'm glad I found this post. I just purchased a used BX 2350 and it ran great for a while and it started to sputter and stall and not run at times.
The first time I thought it was water in the lines so after blowing out and checking the filters I didn't see much water coming out so I ordered filters and replaced them both.
Well that last a little while and it started again, so I decided to replace the rear filter even though it wasn't clogged and got my grass done that day but it started to sputter under a load so fir sure it's not the filter.
I didn't think to try and blow the line back into the tank but I will now.
I'm 100% sure its the fuel gauge sender rusting and causing a issue with fuel starvation I have a funny feeling.
A new sender is like $134 not including shipping so if that's the case I will remove it cut off all the metal and not replace it for that much $ that's crazy.
It's not made of gold is it instead the new sender looks like plastic to me - I can look in the tank to see when fuel is running low - LOL
I saw someone who cut a hole in the tank under the seat to access it and clean it I was thinking of doing the same thing but if its the sender it would only temporarily solve it.
He installed an access port to make accessing the tank for clean-out while in the tractor.
If the sender is bad the only thing to fix it for sure is tank removal and replacing the sender or doing away with it.
I plan on digging into it over the next few days wish me luck

 

[JoeP19934]

I'm glad I found this post. I just purchased a used BX 2350 and it ran great for a while and it started to sputter and stall and not run at times.
The first time I thought it was water in the lines so after blowing out and checking the filters I didn't see much water coming out so I ordered filters and replaced them both.
Well that last a little while and it started again, so I decided to replace the rear filter even though it wasn't clogged and got my grass done that day but it started to sputter under a load so fir sure it's not the filter.
I didn't think to try and blow the line back into the tank but I will now.
I'm 100% sure its the fuel gauge sender rusting and causing a issue with fuel starvation I have a funny feeling.
A new sender is like $134 not including shipping so if that's the case I will remove it cut off all the metal and not replace it for that much $ that's crazy.
It's not made of gold is it instead the new sender looks like plastic to me - I can look in the tank to see when fuel is running low - LOL
I saw someone who cut a hole in the tank under the seat to access it and clean it I was thinking of doing the same thing but if its the sender it would only temporarily solve it.
He installed an access port to make accessing the tank for clean-out while in the tractor.
If the sender is bad the only thing to fix it for sure is tank removal and replacing the sender or doing away with it.
I plan on digging into it over the next few days wish me luck

OK so I got home from work and siphoned some fuel out and not to my surprise after seeing all the similar symptoms I'm having it was filled with rusty metal ( magnet picked it up out of the diesel ) and some what likes to be tank plastic.
I am going to see if I can just pull the float level assembly out and gut it and just stick the plate back ( I may just make a plate ) on I am not going to pay $134 + dollars to replace it.
I also plan on cutting the tank to gain access to clean it and install an access port to close it up.

 

[JoeP19934]

CONFIRMED!
Rusted and flakey sender.
I ripped the float assembly off and cleaned the base off and sprayed it with epoxy spray paint and was going to install it without the sender but I found a cheap replacement that works somewhat. The gauge goes to over half.
I'm happy I found the issue but very upset that a dealer could sell me this tractor used and not even checking a known issue! I found a sender that was close to the original.

 

[ultrarunner]

The selection of components comes up short for the application...

Some have found always keeping a full tank helpful but in the real world not always possible.

Selecting better suited components impervious to rust would be a quality move.

Im curious if there have been sending unit revisions to overcome this known problem?

 

[JoeP19934]

The selection of components comes up short for the application...

Some have found always keeping a full tank helpful but in the real world not always possible.

Selecting better suited components impervious to rust would be a quality move.

Im curious if there have been sending unit revisions to overcome this known problem?

It looks like the replacement uses some kind of plastic and possibly a stainless steel rod but don't know for sure - https://www.messicks.com/images/parts/55/ku_k2771-613700.png

 

[ultrarunner]

Stainless would be a great improvement...