1995 MERCEDES S320 failed emission in HC at Idle
My 1995 Mercedes S320 failed the emission test on HC(ppm) at idle. The limit is 220 and my car is 396. I passed at cruising but failed at idling. Can you help what cause this.
I am afraid the dealer will rip me off by saying eveything is wrong. They are hungry for business now.
Thank you for you help.
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