Skyhawk L4-112 1.8L Turbo VIN J FI (1984)
Spark Plug: All Technical Service Bulletins
Spark Plug - Service on Engines With Aluminum Heads
Bulletin
86-6-17
Date
May '86
Ref. No.
86-126-6
SUBJECT:
SPARK PLUG SERVICE ON ENGINES WITH ALUMINUM HEADS
MODELS AFFECTED: 1982 THROUGH 1986 MODELS EQUIPPED WITH 1.8L OHC ENGINES (VIN CODES J AND O)
Removing spark plugs from 1.8L OHC engines with aluminum heads for inspection, servicing or replacement, is a relatively simple task but it does
require care and attention.
NOTICE:
To remove spark plugs from engines with aluminum heads, allow the engine to cool. The heat of the engine, in combination with a spark
plug that has run for many hours, may cause the spark plug to seize.
Whenever spark plugs are to be reused, the crushable design gasket, part number 5612328, must be replaced each time the spark plug is removed. The
correct spark plug installation torque is 18-22 ft.lbs. (25-30 N-m).
NOTICE:
Over tightening of a spark plug can cause stretching of the spark plug shell and could allow blowby to pass through the gasket seal between
the shell and insulator. Over tightening also results in extremely difficult removal.
