1995 BMW 525i Will not pass emissions

1995 BMW 525I
192,000 MILES • 6 CYL • 2WD • AUTOMATIC
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MICKEY35
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  • 1 POST
Hello, I have a 1995 BMW 525i, it will not pass the Nox portion of the emissions test(AZ). It's supposed to be 2.0 or lower and I've been hitting 5.0! I had the Catalytic Converter changed and now it's even higher! 5.60! Tonight I found a hose that leads from my air filter to the engine and there are 2 big holes in it. Can that be the reason it is failing? and what is that hose? Thank You so much for your answer.
Feb 1, 2009 at 10:39 PM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
Replace it and see if it helps. I have got NOX to come down with water injected in the intake, a little at a time and when you get say a half gallon through the motor, it should pass NOX.
Feb 1, 2009 at 11:51 PM
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