Volkswagen Workshop Service and Repair Manuals

• ● Minimum engine oil temperature 60 °C.
• ● Ignition switched off.

Checking centrifugal advance with TDC sender

Specifications: distributor data =>page 28-13

• ‒ → Connect up ignition tester V.A.G 1367 with clip-on trigger V.A.G 1367/8 or ignition tester V.A.G 1767.
• ‒ Start engine.
• ‒ Increase engine speed if necessary to idling speed.
• ‒ Note down advance angle indicated as basic value.
• ‒ Slowly increase engine speed.
  Start of advance is indicated by a greater number of degrees.
• ‒ Increase engine speed to next test speed.
• ‒ Read off advance angle on tester.

• ‒ Calculate centrifugal advance angle:

Repeat test at other test speed

Checking centrifugal advance with stroboscopic lamp

Specifications: distributor data =>page 28-13 .

• ● Ignition switched off.

• ‒ Connect up rev counter and stroboscopic lamp.
• ‒ Pull vacuum hose (s) off vacuum unit of distributor.
• ‒ Start engine.
• ‒ Increase engine speed if necessary to idling speed.

• ‒ "Bring back notch" to ignition timing point mark.
• ‒ Note down advance angle indicated as basic value.
• ‒ Slowly increase engine speed. Start of advance is indicated by movement of notch.
• ‒ Increase engine speed to next test speed.
  "Bring back notch" to ignition timing point mark and read off advance angle.
• ‒ Calculate centrifugal advance angle:

• ‒ Repeat test at other test speeds.