Kubota diesel in TW advice please.

[Graham]

Running the chipper today it suddenly died down, chucked out thick black smoke and stopped.

 

We changed all the filters, bled the system and still won't start. All it does is chuck out black smoke and soot.

 

It seems to me that the fuel's getting through but not under pressure. Any ideas please.

 

Thanks.

 

btw it's the 4 cyl engine.

[Simon Rotheram]

When you say all filters did thin include the air or just fuel and oil, air filter blockage can cause black smoke and low power...?

[Graham]

Air filter and fuel filters changed.

[hazzygawa]

crack off all the injectors and see if diesel is getting to them, look to see if it looks like diesel is coming out under pressure.

 

has your diesel got contaminated?

[Graham]

Cracked off the pipes to the injectors and it just seems like a dribble. I'm assuming there should be a bit of pressure but doesn't seem enough.

 

The filters had some cr*p in them. Could some of this have got into the pump or caused something to happen in the pump.

 

We filled it this morning from cans and the diesel comes from our usual supplier.

[Dean Lofthouse]

Fuel starvation should just make the engine stop with no black smoke, black smoke is normally associated with air starvation or over fuelling

[Graham]

Fuel starvation should just make the engine stop with no black smoke, black smoke is normally associated with air starvation or over fuelling

 

That's what we thought. Air filter and pipes are clean. Turning the engine over on the starter produces thick black smoke and lots of soot particles.

 

My mates bald head was covered in black soot spots:001_smile:

[Dean Lofthouse]

Only thing I can think of then Graham, is the crap must have gone through to the injectors, but then you would normally get grey smoke

[Mesterh]

Can you turn the engine over easily by hand? ie is there any compression in it.

[Dean Lofthouse]

Just an after thought.

 

I once had similar and what had happened is the tube to the air filter had delaminated and the inside walls were being sucked together but it appeared normal on the outside