1992-1994 TOPAZ 1992-1997 COUGAR 1992-1998 CONTINENTAL, GRAND MARQUIS, SABLE, TOWN CAR, TRACER 1993-1998 MARK VIII 1999 COUGAR
1992-1996 BRONCO 1992-1997 AEROSTAR 1992-1998 ECONOLINE, F-150, F-250 LD, RANGER, SUPER DUTY F SERIES 1993-1998 EXPLORER 1997-1998 EXPEDITION, MOUNTAINEER 1998 NAVIGATOR
In-vehicle testing of multi-port fuel injectors, using Rotunda Fuel Injector Tester 164-R3750, will no longer be warranty reimbursable. Lack of tester updates and improvements in the design of fuel injectors has led to the discontinuation of this Service Procedure. A significant number of warranty returned injectors test within engineering specification. All diagnostic tools and procedures are being re-evaluated for effectiveness.
Acceptable fuel injector tests include: Service Bay Diagnostic System (SBDS) relative injector flow, fuel pressure decay, cylinder drop/balance techniques, and misfire detection tools. Using the acceptable fuel injector tests eliminates the possibility of a misdiagnosed fuel injector concern due to inaccuracy of this test equipment. Since the introduction of Deposit Resistant Injectors in 1991, lean fuel conditions caused by deposit formation have been eliminated. Diagnostic concentration is on single fuel injector inoperative concerns in a particular cylinder.
CLEANING OF FUEL INJECTORS IS NOT WARRANTY REIMBURSABLE EXCEPT FOR THE FOLLOWING VEHICLES: