can someone guide what seems to be the issue with my car Nissan march 2002 A/T
when i am on signal or heavy traffic jam and the car is in very slow speed or stoped with gear in and brakes applied the car starts shaking like dug dug dug dug as soon as i increase the speed its OK only on low speeds i have taken to mechanic more then dozen time he increase the nozzle of the CNG kit it gets OK and after few days same issue
any expert here to recommend me to help out