Rabbit Carbureted Model
- Run engine until oil temperature is a minimum of 176°F (80°C). Be sure choke is fully open. Remove PCV valve from valve cover. Turn off all electrical equipment.
- Connect tachometer, timing light and dwell meter to engine. Be sure dwell meter is connected to test receptacle on left strut tower. Start engine and accelerate to 2000 RPM for 5 seconds. Check idle speed and dwell. Dwell will fluctuate between 18-45°.
- If adjustment is necessary, disconnect both idle stabilizer plugs and connect plugs together. Remove vacuum advance and retard hoses at distributor and plug hoses.
- On vehicles with air conditioning, turn on air conditioner. Set control to maximum cold and fast fan speed. Set idle speed using idle adjusting screw. Turn off air conditioner. Set idle speed using hex nut on vacuum solenoid. See Fig 1 .
On vehicles without air conditioner, set idle with idle adjusting screw.
- If dwell is incorrect, remove carburetor and tamper-proof plug from idle mixture screw. Reinstall carburetor and adjust idle mixture screw to obtain 28-50° dwell. Install new tamper-proof plug.
- Once idle has been adjusted, shut engine off, disconnect test equipment and reconnect all hoses.
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.