HC (PPM) too high in truck. How to fix? 1990 Ford F-250 5.8L. Failed state emissions test. HC limit is 160, truck was tested at 169. Others that passed were- CO (%) limit 2.23 had 2.11, NOx (PPM) 2897
high hc 97 rav 4 with 240k on it On the 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, ...
...HC CO NO Max Measured Max Measured Max Measured 116 115 0.74 0.60 791 568 15 91 78 0.62 0.52 730 311 25 Like I said earlier, the Ignition Timing was off but that has been sorted. My worry is that the ...
...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 catalytic converter, but without more ...
high HC in smog test???? High HC means moisture in the system. Try driving it longer then take it to the smog shop. Otherwise it could be hard like a head gasket or easy such as a PCV not functioning.
...high hc and nox can be attributed to a faulty EGR system nox is produced when the combustion chamber temperature gets too high so a small amount of exhaust is cycled back into the air stream to help ...
Question about 1991 Accord
...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 can do is ...
High HC's only issue tacoma 3.4 v6, 250,000 miles. last 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
Question about 1997 Tacoma
...and HC gases, along with oxygen and Nox also in some areas. The EGR valve allows some exhaust gas to be recycled thru the engine and reburned. CO or HC could be high if the EGR system is not
Question about 1997 Tacoma
...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. pep boys sells ...
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