I just bought a Santro GV 2004, 112,5000 done. Engine is in perfect condition. I started to have this problem since yesterday when i got my car serviced, After getting the service done, i got CNG full. The switch position was in middle, the car started perfectly and when i convert it to CNG it starts missing and on releasing the accelerator, the engine shuts down. Re-starting again it misses and on giving accelerator, it remain started. I switched the switch to CNG and drove back to home. I ran smoothly to my home. on reaching home, the acceleration just died down (gari ghutne lagi or or phr band hogai) i started again and it missed. The car is starting on Petrol perfectly but missing and shutting down as soon as it is converted to CNG. Please advice as what should be wrong here as i have no clue.
P.S: Also guide me with the switch settings where should be the default position when starting?