Mark VII V8-302 5.0L HO (1986)
Manifold Pressure/Vacuum Sensor: All Technical Service Bulletins
Engine - Black Exhaust Smoke/Rough Idle
Article No. 86-7-10
BLACK EXHAUST - 5.0L - MAP HOSE KINKED
IDLE ROUGH - 5.0L - MAP HOSE KINKED
MPG POOR - 5.0L - MAP HOSE KINKED
FORD 1986 THUNDERBIRD, MUSTANG, CROWN VICTORIA
LINCOLN-MERCURY 1986 COUGAR, CAPRI, GRAND MARQUIS, MARK VII, CONTINENTAL
CALIBRATION: All with 5.0L EFI
Black exhaust smoke, rich running engine, rough idle and/or unsatisfactory fuel economy can be caused by improperly routed (kinked) vacuum hose
which restricts vacuum flow to MAP sensor.
1.
Inspect vacuum hose routed from vacuum source to MAP sensor.
2.
If hose is pinched or kinked, remove and replace with new hose and reroute in a manner to ensure there are no kinks and/or potential obstructions.
3.
Check all vacuum hose connections to ensure there are no vacuum leaks.
4.
If symptoms continue to exist, perform EEC Quick Test, by referring to procedure in the 1986 Emission Diagnosis Car Shop Manual, Volume H.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP12226A86 - Replace hose.
TIME:
1.0 Hr.
OPERATION: SP12226B86 - EEC Quick Test.
TIME:
0.5 Hr. DLR. CODING: Basic Part No. DRIVE - Code: N4
