 Help! Failed smog test, CO is too high |
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| jnp914 |
  Jul 16 2004, 04:33 PM
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Member  Group: Members Posts: 177 Joined: 19-August 03 From: Las Vegas, NV Member No.: 1,046  |
I recently moved to Las Vegas. A smog test is required, even for classic car plates. The test consisted of two minutes at 2500 rpm, idle, 1000 rpm, idle, 2500 rpm, idle.
The car passed the 2500 rpm CO test of 2.50 with a 2.16. However, it failed the idle test with a 3.44. The tech stated it was idling too rich. The car is a '76 912E with the 2.0. I installed a new K&N filter to maximize air flow. What else can I do to lower the idle CO reading? There is a provision for a waiver, after $450 in repairs at an approved shop. I would like to put the money elsewhere. Help? |
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| Cap'n Krusty |
Jul 16 2004, 05:18 PM
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Regardless of the real problem, you live where it's dusty, and you installed a K&N? Bad move. Less filter area, bigger pores, degraded air flow when it's loaded up even a little bit, it allows that oil to enter the intake air stream, as well as a LOT more dirt .................. The Cap'n
Now, the CO. Open the air bleed screw in the air box. That's the idle CO adjustment. Doesn't really affect the high RPM numbers, but it can make a HUGE difference in the idle readings. Also The Cap'n |
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Posts in this topic
jnp914 Help! Failed smog test Jul 16 2004, 04:33 PM
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