Hello all, picked the disco up the other day after having the cylinder head replaced. I followed the disco out of the garage and noticed a bit of black smoke, I thought it might clear and could be residues from having A. the turbo failing and B. the head being replaced.
It was also down on power and has clearly not been right since we picked it up on Thursday.
Any how I have had it in for a look and a think at the workshop this morning. I unplugged the Mass Air Flow Meter and it made a huge improvement to performance on a test run.
Think I need to be ordering a new one Monday morning!!
Performance is not spot on with it unplugged but it would not as it is running its back up strategy for the MAF.
Can anyone confirm the symptoms of low power and black smoke being caused by the MAF?