Technical Fiat Ducati 2.8 jtd wastegate

[Benimardriver]

Hi
can anyone point me towards the threads that cover topic of 2.8jtd turbo waste gate sticking causing puffs of smoke from exhaust when vehicle is under load .
thanks

 

[Communicator]

Hi
can anyone point me towards the threads that cover topic of 2.8jtd turbo waste gate sticking causing puffs of smoke from exhaust when vehicle is under load .
thanks

The wastgate on the 2.8jtd Sofim 8140.43s should be closed when the engine is stopped. My understanding is that as engine rpm rises, the increased exhaust gas flow causes the turbo to speed up, and increase the boost pressure, which allows more fuel to be used, and hence increase power output. With increasing inlet manifold pressure, the wastgate gradually opens so as to limit the boost or inlet manifold pressure via the turbo. Sticking wastegates are normally stuck in the closed position, due to the fact that motorhomes typically have long idle periods. A stuck wastgate may therfore cause excessive boost pressure, which should raise an alarm via the manifold absolute pressure sensor and the ECU.

Broken wastegate links are not unknown. This leaves the wastegate uncontrolled.

Black smoke is normally a sign of excess fuel, rather than too much air (high boost). If I had puffs of black smoke on my 2.8jtd, I would be wondering about the health of the injectors, or fuel pressure regulator, but then I could be wrong.

 

[Communicator]

As an afterthought, there are six versions of the 2.8jtd Ducato. If we exclude the "power version" Sofim 8140.43n, and those with a heat flange for cold starting, then this reduces to two possibilities, with EGR, or without EGR. I think that the latter is more common in the UK. It may help to know which version @Benimardriver has.

 

[Benimardriver]

Without egr

 

[Communicator]

Without egr

Then perhaps similar to mine, which is in an x244 model.

 

[Benimardriver]

Hmmm! From your photos I think not

 

[Ocwobio]

Hmmm! From your photos I think not

That is a static generator engine data plate, NOT the Fiat engine details.

 

[Communicator]

Hmmm! From your photos I think not

If this is some sort of joke, it is not appreciated.

 

[Benimardriver]

It was one of two attachments to your post that’s why I thought it was a joke also . Very strange . Now going back over post can’t see them .

 

[jackwhoo]

A few years ago on this forum random pictures would sometimes attach ......
Ghosts in the machine ?
hack?

 

[Benimardriver]

A few years ago on this forum random pictures would sometimes attach ......
Ghosts in the machine ?
hack?

That’s exactly what must have happened there . I did think it very strange

A few years ago on this forum random pictures would sometimes attach ......
Ghosts in the machine ?
hack?

thats exactly what must have happened here as they now seem to have disappeared .