I have mehran VX 2003
Problem: It jerks and almost lose power at speed of 80 to 90km on CNG. On petrol its quite normal and smoothly attain the speed of 110.
if i accelerate in 3rd gear, at 80km it starts taking jerks and in 4th gear at speed of 90 or 100.
Engine is good,New plug(Denso) New ignintion coil, New air cleaner,
Many times tuned by CNG technician but problem persists.
It embarassed me many times while overtaking, i have to quit overtaking with shame becase of these mysterious jerks.Plz suggest me what to do?
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