Engine - Slow/No Start/Missfire/Poor Economy
86ford20Article No. 86-7-15
NO START - 1.6L 2V - DISTRIBUTOR CAP, ROTOR, VACUUM ADVANCE ASSEMBLY
SLOW START - 1.6L 2V - DISTRIBUTOR CAP, ROTOR, VACUUM ADVANCE ASSEMBLY
MISS - 1.6L 2V - DISTRIBUTOR CAP, ROTOR, VACUUM ADVANCE ASSEMBLY
POWER LOW - 1.6L 2V - DISTRIBUTOR CAP, ROTOR, VACUUM ADVANCE ASSEMBLY
FUEL ECONOMY POOR - 1.6L 2V - DISTRIBUTOR CAP, ROTOR, VACUUM ADVANCE ASSEMBLY
FORD 1983-85 ESCORT, EXP
LINCOLN-MERCURY 1983 LN7; 1983-85 LYNX
CALIBRATIONS: All with 2V carburetors
No start, slow start, misfire, low power at part throttle and/or poor fuel economy concerns can be caused by spark tracking and crossfire in distributor cap and/or cracked diaphragm in the distributor vacuum advance assembly.
Figure 9:
When checking for these concerns, perform test number two (secondary display) of Part 1 of Section 15, Volume H of the Shop Manual. If an unsatisfactory condition is found in the secondary display, it can be serviced by replacing the distributor cap, rotor and vacuum advance diaphragm. Use only vented cap (E5FZ-12106-C) blade rotor (E5FZ-12200-A) and a vented diaphragm assembly of the same calibration. (See Figure 9)
NOTE: Use silicone dielectric grease (D7AZ- 19A331-A) on the blade rotor as per the service manual instructions.
When servicing poor part throttle engine performance or poor fuel economy concerns, check the operation of the distributor vacuum advance diaphragm per Shop Manual, Volume H, Emission Diagnosis, Section 15, Distributor Vacuum Advance Mechanism Testing. If the diaphragm assembly is confirmed inoperative, replace with a vented diaphragm assembly of the same calibration. (See Figure 9)
PART NUMBER PART NAME CLASS
E5FZ-12200-A Rotor AG
E5FZ-12106-C Cap AG
E2FZ-12370-A Diaphragm Assembly B
E3FZ-12370-F Diaphragm Assembly A
E3FZ-12370-A Diaphragm Assembly R
E2FZ-12370-D Diaphragm Assembly A
E6FZ-12370-A Diaphragm Assembly C
Refer to Parts Catalogue for diaphragm assembly applications.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP12106A6 - Diagnosis for vacuum/ignition
TIME: 0.5 Hr.
OPERATION: SP12106A6A - Replace cap, rotor, and vacuum advance
TIME: 0.4 Hr. DLR. CODING: Basic Part No. 12106 - Code: N2