Every 60 thousand km, it is necessary to check the resistance of the wires with an ohmmeter. Wires with increased resistance can cause interruptions in operation and difficulties with starting the engine in wet weather. On average, the service life of wires is 58-80 thousand km.
To check the resistance, remove the distributor cap, leaving the wires leading to it. Connect the ohmmeter wire to the electrodes.
Any wire with a resistance greater than 22 kOhm should be replaced.
It is necessary to check the high-voltage wire from the ignition coil by connecting the ohmmeter wire to the central contact of the distributor cap and the end that goes to the ignition coil. If the resistance is more than 2500 ohms, replace this wire and check the resistance of the wire itself. Resistance above 1500 ohms is sufficient reason for replacement. It should be remembered that the resistance depends on the length of the wire; the longer the wire, the greater its resistance. Thus, if the wires of your car are longer than the original ones, the resistance is higher, but it should not exceed the limits specified above.
When installing new wires, replace them to avoid confusion. Start by replacing the longest wire. Install the cap tightly on the spark plug. Run the wires in the same way as before. Tightly place the caps on the distributor cap and on the ignition coil.