...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 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 ...
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,
Question about Honda Accord
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
...smog test I have the truck test it 2 times, the first I pass emission but I fail oxigen sensors. On the second test I pass everything but I fail the emission test, the HC and NO readings are to high. ...
Question about Cars & Trucks
failed smog for high hc levels st idle . what should i do before i take it back to try and smog? ive already done complete tune up. as long as you have no check engine light on change oil, air filter.
...smog 2 years ago barely passed the low idle HC, this year it failed the low and barely passed the 25mph test? I can attach actual readinsif that will help? Hydrocarbons (HCs) are unburned fuel. You ...
Question about Ford Cars & Trucks
...Failed smog/ Egr numbers were too high How can i fix this to pass smog Other than testing the EGR valve, not many options. You really need a 4 gas analyzer to know what is coming out of the tailpipe. ...
failed the emissions test. HC (PPM) CO % Low High Low High Reading 245 443 3.27 10.02 Limit 220 220 1.20 1.20 Was told to get it tuned up. What would cause these problems? And can it be fixed/tuned up
smog test and 91 octane premium fuel. I can't see any visible signs of a faulty emission hoses as I've diagnosed that before on a previous inspection years ago due to a MIL code. I&
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