Quote:
Originally Posted by itzroyal
The mechanic at Honda finally figured out why my car has been misfiring and why the spark plugs are always black when he pulls it out. When he starts my car up in the cold, he noticed a strong gas smell. He said the car is not burning the gas efficiently which is leaving carbon build up throughout the emission system. He has already cleaned the emission system for me again, including ports and valve again. He suggested I drive the car hard to burn the remaining carbon build up. Is there any reason why my car is not able to burn gas the way it suppose to? Is there a way to fix this problem?
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What brand of plugs are you using?
For anyone reading along, you should only run NGKs in the stock heat range. Make sure they are gapped correctly also (can't remember the spec, Helms has it).
Don't run Bosch +4s, those are a problem on 100% of all cars that have tried it.
