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Question: I have a WagonR CNG. It seems to stall when the car is moving slowly in traffic with the AC on, mostly when the car is driven with low rpm. The vibration has increased, and there is a knocking noise in my car. Can you tell me what could be the problem and how to get it rectified. I also need to check two filters called high and low filters with O-ring. Please advise.

Answers: Please bring the vehicle to the nearest MFCS workshop. Please check the Vaporizer in CNG Kit for stalling & vibration issues. The CNG Reducer filter & low pressure filters with O-ring has to be replaced every 40,000 & 20,000 kms as per the Preventive Maintenance Schedule recommended by the manufacturer.

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