I have a 2000 1900cc diesel Peugeot Boxer van that I use around town for my building work and it is great. However, on the rare occassion when I go out of town and drive it a bit hard the engine sometimes revs up on it's own, it gets faster and faster and pumps out dense black smoke. It will not stop when you turn the ignition off the only way is to stall it. I then let rest for a few minutes and then all is fine again. Any ideas to what causes this, I have considered that the injectors may need cleaning. Barry

Sounds like it's running on it's own engine oil - how many mile's has it done ?

Yep engine oil getting into the induction system --
Turbo oil seal leaking ?

Have to agree, check the oil level first though!

lucky you manage to stall it, ive seen people by the road with it just running and the end result is expensive!

Think turbo bearings is one place it can happen. It is indeed a case of it running on its own oil.

as above - get it fixed asp or you will have a broken engine as there is no rev limiter due to running on its own oil, prob the turbo.

Darren

this happened to my old mans car was the turbo that had gone.
He managed to bend over the air filter pipe so no air could get in that stopped he engine before it blew up

Thanks for the replies however, did not mention that it's not a turbo, but agree it appears to run on it's own engine oil. Any ideas?

If the piston rings are shot, the excessive blow-by is forcing oil through the breather back into the inlet. With that level of wear it's very probably stinking out anyone unfortunate enough to be behind it as well!

However, since it's black smoke it could be a pump fault, i.e. the control mechanism is sticking.

[Edited on 9/5/10 by MikeRJ]

Check the breather system isn't blocked and as said, the oil level