Golf GTI L4-1984cc 2.0L DOHC (9A) (1990)
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8.
Pump the vacuum pump until the slack-tube tester reads 0.7 - 0.8 in. Hg.
The idle speed must drop.
9.
If the idle does not drop, or if any of the other test values are not within specification, replace the vacuum amplifier and then retest.
