Join Date: Sep 2001
Thanked 0 Times in 0 Posts
Need advice - won\'t pass CA smog test
Got the notice for a Test Only smog check, yikes. Got it on the dyno yesterday and asked the tech to do a pretest. It didn't pass. Hydrocarbons and NOX too high.
The tech said could be EGR, secondary ignition, catalytic converter, or timing.
I checked EGR, OK, I checked timing, OK. I checked seondary ignition, have new coil, plugs, cap, rotor, and wires - OK. Did a comporession check, OK. I still have a VERY slight misfire on all cylinders at all speeds.
What have I overlooked? I adjusted the valves only a few thousand miles ago if that. If I replace the cat will it pass?
ALL suggestions are appreciated. Gotta get running for Thanksgiving weekend.