Some vehicles equipped with 5.8L *EFI engines and E400 transmission may have Deposit Resistant Injectors (DRI) installed. This injector is designed to eliminate the lean fuel delivery problems which occur with conventional multi-port fuel injectors when low grade, non-detergent fuels are used. The injector has no pintle on the tip of the needle, such as a conventional injector has. It meters fuel, instead, through four small holes in a metering plate on the end of the injector. As baked-on fuel deposits coat the tip of the injector over time, they do not reduce the metering area of these small holes and the injectors maintain the proper fuel metering characteristics regardless of the quality of fuel being used. (They do not deteriorate lean as conventional injectors do.) DIRECTOR/METERING PLATE lSlNGLE/MULTl-HOLE) NEEDLE DEPOSIT RESISTANT INJECTOR (DRI) METERING ASSEMBLY V8012-1A