Hi I have Civic 97 it works fine with superb pick on CNG but for past few weeks its doing missing on petrol.
My mechanic initially said that one of the injector is faulty it was identified by removing the injector cable. In any case it had the same response therefore i changed it.
Then after that he said that the petrol might be dirty so i burnt all tank and inserted few liters of fresh petrol. Even than the behavior was same. so than we cleaned the fuel filter also. But the problem still persists, I am fed up from the situation I have to sell my car but it doesn't leave good impression if buyer checks the car on petrol and observe this issue.