See Figure 1
At every tune-up/inspection, visually check the spark plug cables for burns cuts, or breaks in the insulation. Check the boots and the nipples on the distributor cap and/or coil. Replace any damaged wiring.
Every 50,000 miles (80,000 Km) or 60 months, the resistance of the wires should be checked with an ohmmeter. Wires with excessive resistance will cause misfiring, and may make the engine difficult to start in damp weather.
To check resistance, remove each plug wire and test one at a time. Connect one lead of an ohmmeter to the electrode within the wire on the cap end; connect the other lead to the corresponding spark plug terminal end of the wire. Replace any wire which shows a resistance of over 25,000 ohms.
REMOVAL & INSTALLATION
See Figures 2, 3, 4, 5, 6, 7, 8 and 9
Some California 5S-FE models were equipped with a coil wire.
- Label and disconnect the wires from each spark plug one at a time. Some engines have spark plug wires which are labeled, No. 1, No. 2 ect. from the manufacture.
If there is no tape around to label the wires. It may be a good idea to remove one spark plug wire at a time so not to mix them up during installation.
- Remove the spark plug wires from the distributor cap. On some models you may need to use a flat bladed tool to lift up the lock claw and disconnect the holder from the cap. Separate the wires at the grommet.
- Pull the plug wires from the retaining clamps.
- Attach the holder and grommet portion to the distributor cap. Make sure that the holder is installed correctly to the grommet and cap.
- Check that the lock claw of the holder is engaged by lightly pulling on the holder.
- On the coil wire (if equipped), insert the grommet and holder together.
- Secure the wires with the clamps.