Passing Smog
#1
Passing Smog
I searched and I can't get my VG30 to pass smog! First time I had 134 vs the needed 120 on my HC levels. Next I tried to get the car warmed up really well and got 131 vs 120 but I still need less! Everything else passes fine and I'm fresh off a tune-up and oil change. What am I missing!?
Last edited by plaman88; 04-01-2009 at 11:37 AM.
#5
I searched and I can't get my VG30 to pass smog! First time I had 134 vs the needed 120 on my HC levels. Next I tried to get the car warmed up really well and got 131 vs 120 but I still need less! Everything else passes fine and I'm fresh off a tune-up and oil change. What am I missing!?
#6
High HC implies unburnt fuel
Caused by:
Timing
Ignition system - plugs/leads/cap/rotor
Fuel metering system - ECT/O2/MAF/EGR/FPR/Injectors/ECU.
Engine condition - blowby/intake and TB gunk due to PCV
Basic maintenance/tuneup required
Caused by:
Timing
Ignition system - plugs/leads/cap/rotor
Fuel metering system - ECT/O2/MAF/EGR/FPR/Injectors/ECU.
Engine condition - blowby/intake and TB gunk due to PCV
Basic maintenance/tuneup required
#8
check your ECU's codes to see if anything is causing a 'phantom' check-engine light. the lights on our cars basically never light up when there's a problem, but it'll still store codes. I don't know what causes high HC levels but maybe your o2 sensor or coolant temp sensor or something could be bad (or bad wiring like i had), causing it to run rich, etc.
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