What do you do if you have accidentally put diesel in petrol car?

Answer 1

DON'T TRY TO START IT. have the tank drained and reinstall gas. If just a couple of gallons were put in, don't worry about it. It will run with a little diesel fuel in the gas but may smoke a bit. First, drain the fuel tank. Remove all diesel fuel from the tank before attempting to start the engine again. Next, determine if the vehicle has a recirculating fuel system. Many of the injected engines have a pressurized fuel system that recirculates back to the tank. If that is the case with your vehicle, fill the tank with the preferred fuel, turn the ignition switch on for five seconds, turn it off again, and repeat the process a few times to circulate diesel fuel out of the line. A small amount of diesel fuel that mixes with your conventional fuel will not harm the engine. If the engine will not start you may need to use a small amount of ether based starting fluid to get the remaining diesel fuel out of the injectors. Once the vehicle starts again it should run properly after you have worked the residual concentrated diesel fuel out of the line. If you determine that your vehicle does not have a recirculating fuel system, open the fuel line near the injectors, place a flexible tube of some kind over the fuel line and drain enough fuel to allow all of the diesel fuel to be removed. Get as much of the concentrated diesel fuel out of the line as you possibly can before attempting to start the engine. Short bursts of starting fluid should keep the engine running while you burn out any remaining diesel fuel.