1. Fuel System Modifications:
- Remove the LPG tank and associated piping.
- Replace the LPG fuel lines with petrol-compatible fuel lines and connect them to the petrol tank.
- Replace the LPG injectors with petrol injectors.
- Install a petrol fuel pump and connect it to the fuel tank.
2. Engine Management System Adjustments:
- Replace the LPG ECU (engine control unit) with a petrol ECU or reprogram the existing LPG ECU to run on petrol.
- Update the ECU software with petrol-specific fuel injection and ignition maps.
3. Electrical System Adjustments:
- Disconnect and remove the LPG wiring harness.
- Reconnect the original petrol wiring harness or install a petrol-specific wiring harness.
- Make necessary electrical connections for the petrol fuel pump, injectors, and other components.
4. Mechanical Adjustments:
- Replace or modify the intake manifold to accommodate the petrol injectors.
- Install petrol-specific spark plugs.
- Check and adjust the valve clearances (if applicable).
5. Safety Inspections and Testing:
- Perform a thorough safety inspection to ensure all gas connections and lines have been properly disconnected and sealed.
- Conduct a leak test for the petrol fuel system.
- Start the engine and check for proper fuel pressure, air-fuel mixture, and engine performance.
Converting an LPG car to petrol requires specialized knowledge and expertise in automotive engineering and fuel systems. It's essential to have this conversion performed by a qualified technician or mechanic to ensure safety, proper functionality, and compliance with regulations.
