yesterday i went to have my 1996 nissan 300zx for a smog check and it fail the smog test. i did everything to pass. i changed the oil, the pcv valves, some hoses, even the spark plugs and it didnt pass at all.
i connected my OBDII reader and i got a code of p0235 which means i have a bad knock sensor and to replace this sucker i have to remove the intake manifold, if i were to take it to the dealer it would cost me 2000 bucks, which i cannot afford
has anyone had any problems passing the test with a faulty knock sensor?
i passed the test, i replaced the two 02 sensors and the knock sensor
Failed California Smog Test Emmissions Not Passed Now What?
This Page Contains information about Failed California Smog Test Emmissions Not Passed Now What? By repair tech in category Blogs with 1 Replies. Last Upated: Thu May 15, 2014
Title: Failed California Smog Test Emmissions Not Passed Now What? 
Tags: failed california smog test emmissions not passed
Tue Jul 01, 2008 By repair tech