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Black smoke

Tiny
OMAIR
  • MEMBER
  • AUDI A4
Hi. I have a 2004 uk Audi A4 1.9tdi (130), manual. It has only done 27000 miles but im getting alot of thick black smoke from the exhaust eveytime I accelerate. There is no loss in power and the fuel economy is good. The car drives smooth. I have changed the oil, fuel filter and air filter and have checked the MAF too. Everthing seems fine. What can the problem be? Could it be the catalytic converter?
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Saturday, September 8th, 2007 AT 6:19 PM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
The car is running too rich..it is common for a fuel injector to stick open or for the fuel pressure regulator to go out and cause too much fuel pressure, this guide ca help you test it to see if this is the problem.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Please go over this guide and get back to us.
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Sunday, September 9th, 2007 AT 9:27 AM

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