Patent ID: 8551260
Filing Date: 2013-10-08
Classification: F02M

Abstract:
1. A method for cleaning the fuel injectors of a motor vehicle which has a fuel tank to remove carbon deposits from the engine thereof, wherein said engine has a fuel pump to pump fuel from the fuel tank and fuel injectors to receive fuel pumped by the fuel pump, said method comprising the steps of: supplying fuel to the fuel injectors to be cleaned while the engine of the motor vehicle and the fuel pump are running, wherein the fuel is supplied by a fuel inlet line that channels fuel from the fuel pump towards the fuel injectors, and wherein the fuel inlet line comprises a fuel valve that is between the fuel pump and the fuel injectors and that is open while fuel is being supplied to the fuel injectors; measuring the pressure of the fuel pump of the engine at which the fuel is supplied to the fuel injectors to be cleaned while the engine and the fuel pump are running; blocking the flow of fuel to the fuel injectors to be cleaned while the engine and the fuel pump are running, wherein the blocking is performed by closing the fuel valve; and delivering a liquid fuel injection cleaner from a source of said cleaner to the fuel injectors to be cleaned while the engine and the fuel pump are still running and at a pressure which is the same as the fuel pump pressure that was measured when fuel was being supplied to the fuel injectors so that the engine runs on the liquid cleaner.