Smoke and smell

[BinksyBinks]

Hi all. Audi a3 2008 2.0 tdi. Black smoke on acceleration and diesel smell, slight whistling sound . Plugged an obd2 scanner in. No fault codes but maf reading a lot higher than it should be. Could this be the culprit for the smoke and smell? Any thoughts? Thanks

[cliffcoggin]

Very likely. You might be able to clean it rather than replace it, but I'd wait for others to chip in first.

[Stevey Y]

5 hours ago, BinksyBinks said:

Hi all. Audi a3 2008 2.0 tdi. Black smoke on acceleration and diesel smell, slight whistling sound . Plugged an obd2 scanner in. No fault codes but maf reading a lot higher than it should be. Could this be the culprit for the smoke and smell? Any thoughts? Thanks

Hi black smoke is due to over fuelling, the high MAF reading is due to the ECU trying to combat the extra fuel with more air, so you either have a leaking injector or the car has been remapped at some point.

Steve.

[Rybrook]

When was it last serviced?

 

Plugged airfilter will also cause black smoke and a loud sucking/ whistling