VCM, or Variable Camshaft Management, is a system used in some car engines to help improve fuel economy and emissions. The system can cause misfires, however, if it is not working properly.
Misfires can occur when the VCM system is not providing the correct amount of fuel to the engine cylinders. This can happen if the VCM system is not properly calibrated or if there is something blocking the flow of fuel to the cylinders. If you suspect that your VCM system is causing misfires, you should take your car to a mechanic for diagnosis and repair.