Vanagon F4-1970cc 2.0L (1982)
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increase engine speed until reading on vacuum tester is higher than 266 mbar (200 mm Hg)
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switch vacuum tester so that it holds vacuum on side connected to vacuum unit
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leave engine running at idle (adjust if necessary)
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reduce vacuum on vacuum tester to 266 mbar (200 mm Hg) or 107 - 147 mbar (80 - 110 mm Hg)
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note advance angles determine vacuum advance by subtracting basic advance angle from measured advance angle
Example: last advance angle measured (-) minus basic advance angle (=) vacuum advance
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compare vacuum advance angles with specified values on
