1991 Honda Accord "failed smog test high" Questions

...test how do I fix this so it would pass smog Try driving at high revs for an hour on a motor/freeway, that will clean the exhaust and internals. It may help if you normally use it for ...

Failed Smog Test Close to CA-HC Limits I took my Honda 92 Accord LX in for a smog test yesterday and ended up failing because of the Ignition Timing. I have since had that sorted out. However of ...

...failed emission test on smog test. High CO and HC on 25mph not enough info. Typically, CO and HC together can be the result of poor fuel control or misfire, or worn components such as O2 sensor or ...

failed my smog, the guy said it was a gross polluter. and that it gives out to much emission from the exhaust. how do i fix that That would all depend on which readings it failed on.high Co's would be

...FAILED SMOG BECAUSE OF HIGH NOX VALUES. WE FAILED THE SMOG TEST BECAUSE OF HIGH NOX. HAS NEVER FAILED BEFORE. 1993 CHEVY SUBURBAN 1500 4X4. COMPLETELY STOCK. WHAT SHOULD I CHECK FIRST. nox is from ...

...smog test any remedies? 99 high nox fail smog test any remedies? 99 astro van changed plugs & plug wires ... Van Runs better need to pass smog nox is to high NOX is created when the internal ...

...failed) @ smog check 1985 Volvo DL fuel evaporative control functional (failed) at smog check replace the pvc valve and have the egr valve replace.make sure the vacuum hoses connect to egr valve and ...

smog test at 15mph 112 HC on the 25 mph 43 HC you may need replace the catalytic converter, but 1st do this, clean the throttle body and idle airbypass valve, change the oil before the retest as well,

failed smog hc too high the truck failed a smog in california with hc levels at 146, 126 was acceptable. It passed at 15 mph, failed at higher rpm test. what do I do to start? About the only thing you

failed smog test high on emissions wont pass smog test. replacement of catalic converter, o2 sensor, pressure regulator, fuel injectors, throttle body Most modern vehicles have 2 catalytic ...