F 150 4WD Pickup V8-302 5.0L (1986)
Ignition Rotor: All Technical Service Bulletins
Distributor Rotor - Engine Bucking/Surging
Article No. 85-21-8
ENGINE MISS - DISTRIBUTOR WITH BLADE ROTOR - SILICONE GREASE
ENGINE SURGE - DISTRIBUTOR WITH BLADE ROTOR - SILICONE GREASE
RADIO NOISE - DISTRIBUTOR WITH BLADE ROTOR - SILICONE GREASE
FORD 1986 ESCORT, EXP, TEMPO, MUSTANG, THUNDERBIRD, TAURUS, LTD, CROWN VICTORIA
LINCOLN-MERCURY 1986 LYNX, TOPAZ, CAPRI, COUGAR, SABLE, MARQUIS, CONTINENTAL, MARK VII, LINCOLN
LIGHT TRUCK 1986 E/F SERIES, BRONCO, RANGER, BRONCO II, AEROSTAR
CALIBRATION: All with EEC IV
1986 vehicles are equipped with a new "blade" design distributor rotor. This design replaces the multi-point rotor used in recent model years. This new
rotor requires the use of silicone grease on the blade. Electrical interference can result from a blade rotor that does not have silicone grease. The
electrical interference affects the distributor stator assembly and can cause engine "missing", "bucking", or "surging". These drive concerns are usually
intermittent and tend to occur during crank and heavy or wide-open throttle.
It is important to remember not to remove the silicone grease for radio noise concerns, on 1986 vehicles with EEC IV; removing the grease can cause
driveability concerns. A future TSB article will address the radio noise issue.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"
