Zephyr L6-200 3.3L (1982)
Distributor Check Valve: Customer Interest
Engine - Spark Knock During Acceleration
Article No:
82-14-12
Spark Knock During Acceleration - Cold
Ford
1982 Mustang, Fairmont, Granada
Lincoln-mercury
1982 Capri. Zephyr, Cougar
Excessive spark knock during acceleration while the engine is cold (0-2 miles after start-up), may be caused by a vacuum regulator valve filter. If the
filter on the lower port of the vacuum regulator valve -9F490- becomes plugged, full manifold vacuum will develop at the distributor rather than the
regulated 6" vacuum.
To Service this condition:
1.
Remove the vacuum check valve (VCKV) from the line to the top port of the vacuum regulator valve (VRV) and insert a straight connector
(383003-S).
