I have mehran 2007 which is giving 20km on CNG but 8km on petrol.
I checked carborator and found following thing..
Carborator have two chamber.
Choke flaper is fully open and remain open all time.
Linkage between second chamber flaper is loose.When I fully press accelerator vaccum device connected with second flaper moves but can not open flaper because linkage is loose.
There are 2 Nozzles on carborator towards cover and one nozel on suction device attached on distribution cape does not have any hose.
Fuel return hoes looks plugged.
Car goes max 80 km/hour.
Any advice???
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