1: First check the pump which is located on the washer fluid bottle if its working then check for the pipes going to the nozel's for any blockage. If these things are alright then pull the nozel's out and wash them.. (in my case nozel's were blocked)
2: The stock setting for Khyber carb is 2.5 turns out from fully closed position.
1 turn = 360 degree.
3: Don't know. Don't have any experience with CNG.
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