Robliddle

What would cause my Mk 3 Mondeo TDCI to bellow black soot out the exhaust while driving? The car seems to drive well and goes like a rocket but spills black crap out while driving around not just on start up or hard acceleration.
The car has covered around 150k on a 2003 plate but has been well looked after.
Anyone any suggestions where to start?

Michael9

A few things can cause it, duff injector/s, turbo, egr....first thing is get codes and take it from there. Mine was similar (also mk3 2.0tdci) but had been sitting for a month or 2 and had a split in the egr/intercooler pipe so wasn't getting full boost then when a new one was fitted the soot was bad but only for a few miles then cleared but yours is obviously different as the smoke's there more or less all the time.

But get codes first, just to say, it probably won't tell you specificaly injectors if they're duff it'll just say fuelling issue ie low ect but codes will help.

I've also just fitted and coded number 1 (left) injector and got a recon for number 3 ready to go in as it was showing signs of leaking too. It's smokey staring from cold too so hopefully this will fix it if I'll be renewing all 4 probably.