Concorde V6-3.5L VIN F (1994)
Spark Plug: Service and Repair
Removal and Installation
CAUTION: Note routing of secondary ignition cables before removing. Failure to route cables properly may result in radio interference, ignition cross
fire, or ignition short to ground.
NOTE: Keep plugs in order removed. A plug, that looks different from the rest, could be a problem indicator.
REMOVAL
1. Spray compressed air around spark plug to prevent foreign material from entering combustion chamber.
2. Remove spark plug wire by grasping boot and turning 1/2 turn while pulling boot back in a steady motion.
3. Remove spark plug using socket with foam insert.
INSPECT FOR:
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Color of Deposits
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Excessive Deposits
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Electrode wear
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Cracked or Damaged Threads Or Insulator
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Worn or Bent Electrodes
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Damaged Gasket
INSTALLATION
1. Start plug in cylinder head by hand, to prevent cross threading.
CAUTION: Do not overtighten plugs, overtightening can distort plugs resulting in a changed gap.
2. Torque spark plugs to 20 ft. lbs. (28 Nm).
3. Install secondary ignition cables on spark plugs, (be sure connectors are pushed onto plug completely).
CAUTION: When replacing spark plugs because of a high speed miss condition; avoid wide open throttle operation for approximately 80 km (50
miles) after installation of new plugs. This will allow deposit shifting in the combustion chamber to take place gradually and avoid splash fouling shortly
after the plug change.