Century Estate Wagon V6-260 4.3L DSL (1984)
Fuel Injector: Service and Repair
1.
Remove fuel lines, using a backup wrench on upper injection nozzle hex.
2.
Plug nozzle and lines to prevent damage or contamination, then remove nozzles by applying torque to largest nozzle hex.
3.
When working on rear bank, it may be necessary to perform the following procedures:
a. Rotate the intermediate steering shaft so steering gear stub shaft clamp bolt is in up position, then remove clamp bolt.
b. Disconnect intermediate shaft from stub shaft.
c. Remove engine support strut.
d. Place a floor jack under front crossmember of cradle and raise jack until it just starts to raise vehicle.
e. Remove front two body mount bolts with lower cushions and retainers. Remove cushions from bolts.
f.
Thread body mount bolts with retainers a minimum of three turns into cage nuts so that the bolts restrain cradle movement.
g. Release floor jack slowly until crossmember contacts body mount bolt retainers. As jack is being lowered watch and correct any interference
with hose, lines, pipes and cables. Do not lower cradle without it being restrained as possible damage may occur to the body and
underhood items.
4.
Remove copper nozzle gasket from cylinder head if gasket did not remain on nozzle.
5.
Reverse procedure to install. Apply suitable lubricant to nozzle threads, then torque nozzles to 25 ft. lbs. When tightening nozzle, torque must be
applied to largest nozzle hex. Torque fuel line to 25 ft. lbs. using a backup wrench on upper injection nozzle hex. Failure to apply the correct
lubricant can cause engine damage. Use lubricant No. 9985462 or equivalent.
