I have got mehran 2007 model I am the first owner. The problem I am having is that my car is fine on CNG but when I drive on petrol then it started missing at 70-80 first then at 60 then at 50 now. Sometimes the car turns off and wont started when I drive on CNG for few KM then start on petrol its fine but still missing aver 50 KMPH. I have changed OIL filter it was very dirty. Mechanic said problem is with FUEL PUMP but my friend also know about cars says there is problem with POINT of car...please give suggestion...

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