The tune-up is a routine maintenance operation which is essential for the efficient and economical operation, as well as the long life of your car's engine. The interval between tune-ups is a variable factor which depends upon the way you drive your car, the conditions under which you drive it (weather, road type, etc.), and the type of engine installed in your car. It is generally correct to say that these cars should not be driven more than 12,000 miles between tune-ups. If you plan to drive your car extremely hard or under severe weather conditions, the tune-ups should be performed at closer intervals. High-performance engines require more frequent tuning than other engines, regardless of weather or driving conditions.
The replaceable parts involved in a tune-up include the spark plugs, breaker points, condenser, distributor cap, rotor, spark plug wires and the ignition coil high-tension (secondary) wire. In addition to these parts and the adjustments involved in properly adapting them to your engine, there are several adjustments of other parts involved in completing the job. These include carburetor idle speed and air/fuel mixture, ignition timing, and dwell angle.
This section gives specific procedures on how to tune-up your Volkswagen and is intended to be as complete and basic as possible.