I have been using CNG on city vario 2007, for last two months I can hear a rattling noise when I put the car into
reverse gear (not always), sometimes a different rattle
can be heard when the car is put into 'D'.
Both sounds only comes when the car is at low
idle,they disappear when the accelerator is pressed.
I changed the gear oil at 20000 Kms & the car had been
serviced regularly from the Honda 3S dealers,
the car has done some 25000 kms on CNG.
Since I have heard many stories (and mostly from honda sellers) that this car is not compatible for CNG & it does cause problems, I took this car to Honda dealer today & they inspected the car but they were not 100% sure whether the sound is of broken transmission or not.
I just want to ask, if my cars transmission is broken what sort of noise should expect & other question is whether
such noises should disappear on pressing the acccelerator?
Please help if any one has got an idea or experience.