Peckerwood

[PECKERWOOD]

I have a L2500, 1268 hours, runs great, uses no crankcase nor trans-axle oil. Problem: Black oil or fuel/exhaust seeping from exhaust to manifold connection, vertical exhaust type, any thoughts you have would be appreciated. I tried to attach a photo but older people and new computers can be a chalange.

 

[Stubbyie]

What you describe is in my area known as 'diesel slobber' and is seen regularly, usually on older high-time machines.

I tend to steer clear of becoming involved with these machines because I tend to think if I can see one problem another may not be too far behind.

The following is my guess, based a bit on experience and mostly on conversations with owners and techs that see this problem. I'll defer to others on this Forum with more knowledge. I myself would appreciate definitive responses.

As best I can tell the condition is caused by overfueling and / or incomplete combustion. I suspect an otherwise good but well-worn engine could exhibit approximately the same characteristic.

Bad injector(s) is first guess, followed by insufficient air (bad air filter), followed possibly by shot rings and / or dusted engine (back to that air filter). Could somehow perhaps be traced back to bad pump somehow overloading cylinder with fuel but I don't think it would run as you describe.

Please post back your continued experiences so we may all learn.

 

[Tx Jim]

Slobbering or wet stacking can be caused in a diesel engine from extended engine idle time. Usually wet stacking can be stopped by putting engine to work for a little while getting it up to operating temp.

 

[CaveCreekRay]

From the guys who know...

For a small diesel rebuild, what's in order? De-glaze the cylinders, new rings, a valve job, new bearings? New fuel pump. What would an engine shop charge for a service like that, assuming the block was un-damaged? Its still cheaper to re-build a motor than re-place it isn't it? Or do the Kubota-ese parts prices eat your lunch?

I am a long way from that but... just wondering!

 

[D2Cat]

Tx Jim explained it. Best thing for that machine is to put it to WORK. Quit letting it set idling. Slobbering will stop in short order once you make the engine do some heavy grunt work!

 

[PECKERWOOD]

Thanks everyone for the informatioin. I am thinking , the best thing to do is take it to a kabato dealer and take my check book. I am concerned about the danger of a fire if i continue to drive this tractor before repairs are made. What is your thoughts on the possibility of this happening. Thanks for your help in advance.

 

[D2Cat]

If you have an exhaust leak, separate the parts leaking and seal it properly. You won't/can't have enough exhaust slobbers to catch fire!!