Hi all who have change the knock sensor or the wirings. So after i change the wire n took the knock sensor out cause my friend broke the clip off( have to buy a new one ) . Put everything back in order , got the car to run n happy that the engine light went off. But i notice that my miles r way down on a full tank of gas ? do anyone know what the problem is ? or did i not tighten the knock sensor or the injectors not push in enough ? or the gasket letting in air from somewhere cause i didn't buy new gaskets (car have only 38000 kms) and the engine i find it's abit (jumpy) when i'm at a stop light . any help would be thankful..