JWR
Elite Member
- Joined
- Apr 19, 2011
- Messages
- 3,979
- Location
- So MD / WV
- Tractor
- MF 2660 LP, 3 Kubota B2150, Kubota BX2200, MH Pacer, Gravely 5660, etc.
I've searched other BX2200 power loss threads and found none matching my situation. This one has about 900 hrs on it. I've had it for 20 years. Garage kept. Nothing remarkable aside from being well kept for at least the last 700 hours and 20 years. Generally very reliable. Have fixed many minor things over the years (installed the hard start relay, replaced a few hydraulic lines, put in steering cylinder seals, etc.) but just a super all around work horse.
For many years it has had an odd thing going on where where I hear it change sound from the standard purr of a good little diesel to what sounds like it is laboring -- almost like an exhaust obstruction. Lowered pitch in frequency of the engine sound -- from a "yeee to an uuuh" if you can think of it with me,,, which of course I cannot describe well. But definitely slightly lowered pitch sound. Ignored it for many years. [Always when fully warmed up, running pretty much full throttle.] In earlier years I could not detect any loss of rpm or power. -- just the sound. Could not convince myself there was anything wrong. This season for the first season it has lost power noticeably in some of those incidents. Lower rpm, maybe 40% loss of power, but keeps running. When I reduce load (like shutting off the belly mower or stop pushing into a pile of soil with the FEL, reducing throttle , etc.) it hesitates a few seconds and picks back up to near full rpm but still does not sound quite normal. Shut it down, go away for 1/2 hour, come back and start it up and all is well with no apparent after effects. In the last week it has happened several times & mainly when under heavy load -- max output shoving full loader bucket from a pile and lifting, etc. all at full rpm. At least one of those times restarting gave stumbling and unhappy slow response in engine rpm.
Have used Seafoam additive over the years many times but generally I am not an additive fan. Get my diesel fuel at local automotive stations. Have used/maintained 5 other Kubota's (both 3 and 4 cyl) over the last 20 years and none of the others have this disease.
Any ideas what is going on here?
For many years it has had an odd thing going on where where I hear it change sound from the standard purr of a good little diesel to what sounds like it is laboring -- almost like an exhaust obstruction. Lowered pitch in frequency of the engine sound -- from a "yeee to an uuuh" if you can think of it with me,,, which of course I cannot describe well. But definitely slightly lowered pitch sound. Ignored it for many years. [Always when fully warmed up, running pretty much full throttle.] In earlier years I could not detect any loss of rpm or power. -- just the sound. Could not convince myself there was anything wrong. This season for the first season it has lost power noticeably in some of those incidents. Lower rpm, maybe 40% loss of power, but keeps running. When I reduce load (like shutting off the belly mower or stop pushing into a pile of soil with the FEL, reducing throttle , etc.) it hesitates a few seconds and picks back up to near full rpm but still does not sound quite normal. Shut it down, go away for 1/2 hour, come back and start it up and all is well with no apparent after effects. In the last week it has happened several times & mainly when under heavy load -- max output shoving full loader bucket from a pile and lifting, etc. all at full rpm. At least one of those times restarting gave stumbling and unhappy slow response in engine rpm.
Have used Seafoam additive over the years many times but generally I am not an additive fan. Get my diesel fuel at local automotive stations. Have used/maintained 5 other Kubota's (both 3 and 4 cyl) over the last 20 years and none of the others have this disease.
Any ideas what is going on here?
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