Patent ID: 7206720

Claim:
A device for monitoring the condition of a fuel system of a vehicle, comprising: a computer harness by which a computer-based fuel monitoring system (FMS) is attached to a vehicle, and, a computer control module which includes a Liquid Crystal or other Display (LCD) upon which can be displayed one or more performance characteristics of a vehicle, and, the computer-based fuel monitoring system (FMS) which performs tests of the main OEM fuel system and failures of the original equipment manufacturer (OEM) fuel system in vehicles having only a main OEM fuel system, and which performs tests on both the auxiliary and main OEM fuel supply systems and failures of both auxiliary and main OEM fuel supply systems in vehicles having both main OEM fuel systems and auxiliary fuel systems, in accordance with selected sequencing programs, where, the FMS is fully calibratable by the user of the device, and, where the FMS is capable of performing one or more calculations based on monitoring the rise and fall of one fuel injector, where, one of the one or more calculations based on monitoring the rise and fall of one fuel injector is that the FMS can calculate the revolutions per minute (RPM) of a vehicle's enginebased on the rise and fall of one fuel injector and, where the user can calibrate the FMS to his/her particular vehicle without any additional programming, and, where, the FMS can function without depending upon or communicating with any on-board OEM computer, such that it is fully transparent to any on-board system.