Join Date: Sep 2000
Re: 87 Iroc Z 28 refuses to pass CA Smog (Hi NO)
Does the egr valve work, is it the correct one? Could the EGR intake ports be restricted.
MAF's were a real problem child with the TPI, is it working correctly? They tend to report lower airflow than what is correct, and leaning the AF ratio.
Is the ignition timing set correctly?
Is the cat working?
What thermostat is in the car? Cooling fans working correctly/
68 Dana 302, 68 rs 327 daily driver/family car, 71 rs, track car/ driver, 68 firebird 400, 70 formula 400, 73 type LT, 98 TA, 2 goofy kids and an incredible wife.