There are a number of reasons why a car that runs on petrol cannot be run on diesel.
* Fuel system: Petrol and diesel engines have different fuel systems. Petrol engines use a carburetor or fuel injector to mix air and fuel, while diesel engines use a fuel injector to inject fuel directly into the cylinder.
* Compression ratio: Petrol engines have a lower compression ratio than diesel engines. This is because diesel fuel has a higher energy density than petrol, so it can withstand more compression without knocking.
* Glow plugs: Diesel engines have glow plugs to help start the engine in cold weather. Petrol engines do not have glow plugs.
* Turbocharger: Many diesel engines are turbocharged, which means that they use a turbocharger to increase the air pressure in the cylinder. Petrol engines are not typically turbocharged.
In addition to these technical differences, there are also a number of legal reasons why a car that runs on petrol cannot be run on diesel. In most countries, it is illegal to operate a vehicle on a fuel that it was not designed for.
For all of these reasons, it is not possible to simply convert a petrol car to run on diesel. If you want to drive a diesel car, you will need to buy a car that was designed to run on diesel.
