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(2) With engine running, move test probe along entire length of all cables (approximately 0 to 1/8 Use the following procedure when removing the high tension cable from the spark plug. First, remove Resistance cables are identified by the words Elec- tronic Suppression. Use an ohmmeter to check cables for opens, loose terminals or high resistance. (a) Remove cable from spark plug. end terminal and the coil end terminal. Resistance SPARK PLUG SERVICE When replacing the spark plug cables, route the ca- bles correctly and secure them in the appropriate re- SPARK PLUG REMOVAL Always remove cables by grasping at boot, rotating the boot 1/2 turn, and pulling straight back in a (1) Prior to removing the spark plug spray com- pressed air around the spark plug hole and the area (2) Remove the spark plug using a quality socket with a rubber or foam insert. (3) Inspect the spark plug condition. Refer to Spark Plug Condition in this section. SPARK PLUG GAP ADJUSTMENT Check the spark plug gap with a gap gauge. If the gap is not correct, adjust it by bending the ground SPARK PLUG INSTALLATION (1) To avoid cross threading, start the spark plug into the cylinder head by hand. (2) Tighten spark plugs to 28 N Im (20 ft. lbs.) torque. (3) Install spark plug cables over spark plugs. IDLE RPM TEST WARNING: BE SURE TO APPLY PARKING BRAKE Engine idle set rpm should be tested and recorded as it is when the vehicle is first brought into shop IGNITION TIMING PROCEDURE Ignition timing cannot be changed or set on Turbo III, 3.3L or 3.8L engines. For diagnostic information, CABLE RESISTANCE CHART Fig. 6 Setting Spark Plug Gap—Typical Ä IGNITION SYSTEMS 8D - 41 |