it must be a 'fuel pump' not an oil pump... modern cars use to have an electronic fuel pumped which is submerged in the fuel tank of your car.. when the ignition turns on, the fuel pumps throws the fuel to your engine. if it has malfunctioned, you need to replace it, it cannot be repaired. get the fuel pump replaced
in order to check, switch ur car on petrol, just switch on the ignition and see if the petrol is coming to the engine or not... u can also examine it my temporarily unhooking the fuel pipe that goes into the carburetor. if the petrol isnt coming then fuel pump is the culprit
check just the point where the main CNG kit body (regulator) is present,,,,,there will be 2 cables there,,,one for CNG ,,other for Petrol,,,,,both shud be connected,,,,
if both are connected,,,,,open the carbeurator (the black round thing in the engine) remove the air filter and put very small quantity of petrol there in the center and then quickly start the engine with continuous pumping of the accelerator,,,,,,
@adl01,,,,yaar if the car is efi then it has to start on petrol and then convert to CNG after 1 minute or so automatically,,,,,this does not seem to be the case here,,,,,i think he has a non-efi car.....