1998 BMW 740 smog check

ilampark · Posted at Mon Feb 04, 2008 8:52 pm

Other Category problem
1998 BMW 740 V12 Two Wheel Drive Automatic 75000 miles
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I am having some problem with smog check on this car. This car is running great, but it failed the first time. What do I need to do pass smog test?
Catalyst covrerter was replaced 2 years ago.
Let me know.

Advertisment · Posted at Mon Feb 04, 2008 8:52 pm

Dr. Hagerty · Posted at Thu Feb 14, 2008 5:24 pm

you did not state why it failed. if the visual passed then it probabaly needs both precat 02 sensors replaced.