1995 BMW 525i Will not pass emissions

Tiny
MICKEY35
  • MEMBER
  • 1995 BMW 525I
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 192,000 MILES
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.
Sunday, February 1st, 2009 AT 10:39 PM

1 Reply

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,603 POSTS
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.
Was this
answer
helpful?
Yes
No
Sunday, February 1st, 2009 AT 11:51 PM

Please login or register to post a reply.

Related Smog Content

Smog Test Failure
GUIDE
Smog Test Failure
Smog test time? When a car fails smog it means the emissions analyzed from the exhaust tail pipe is too high, there are missing emission components, or you have a check...