Tips

A good place to begin the tune-up is with the distributor cap. Note position of cap. Mark for reference. Remove fasteners and inspect cap. Look for cracks or deposits on the contact points.

Contact deposits cause a loss of spark efficiency, and can lead to misfires along with decreased fuel economy. This cap needs to be replaced.

Under the distributor cap is the rotor. Take note of rotor position before removing. The new rotor must be installed in the same orientation.

The old rotor at left shows wear as compared to the new rotor at right. Always replace distributor caps and rotors together as a pair.

Install the new rotor in place of the old making sure the base is seated and the contact tip is in the same place as it was.

Replace spark plug wires one at a time to avoid a cross up. Orient the new distributor cap next to the old and use the process of elimination starting with the longest wire first. Install new cap and wires on distributor.

Spark plugs wear out too. Note combustion buildup on the spark plug at right. New spark plugs will restore ignition efficiency. Gap and install new spark plugs according to specification.

Clogged air filters can cause the engine to run out of breath. Replace air filter according to maintenance schedule for peak performance.