Questions & Answers for: Isuzu fix failed smog test

...failed the smog test and need to figure this out quickly. My idle emission tests all passed but my functional check (above) obviously did not. I am a loss as to what to do to fix the problem since I ...

...smog test. === The CORRECT method to fix your problem is to drop the gas tank and replace the fuel sending unit. If you truck has over 140,000 miles on it then I will recommend you the change the ...

...smog test. You need to have an OBII scan performed. (fault scan) The light is indicating a sensor has triggered identifying a fault/problem. Fix the fault - light goes out. How long has your check ...

...failed smog test it said exhaust gas recirulation not detected. i replaced the egr valve then cleared the code drove it for a day and the code came back. what could this be best advice is to make a ...

Smog Test needs to be re-tested.  I am aware that this process isnt performed in many states accross the US or in Toronto, Canada.  If the service garage performs these tests for the gov'

...failed)( or balance tests) coolant leaking into the combustion chamber. low compression (old cars i check this at get go. gee it's OLD. EGR stuck open. clean it? VACUUM is low>? not 19"HG at idle, ...

...smog. First it was speed sensor.. Didn't work,Then tried the odometer wire replaced.They checked cluster.Now computer Now computer. . . ? so you posted a question and no year car> wow.1 not that ...

...the smog test? fuel evaporative controls functional. A note at bottom said vehicle failed evap test and idle speed out of tolerance. mechanics don't know what to do. See prior answer to multiple

...failed note at bottom of smog chck inspection report says, vehicle failed eva test and idle speed out of tolerance what does this mean so I can take it to a mechanic. Your mechanic will know. Eva= ...

...smog test said monitor not ready. (Catylyst) Many newer computers will read sensor data constantly, but in the case of a smog test many sensor data needs to be continuously reading for two or more ...