A8 Quattro Sedan V8-4.2L (AUX) (2001)
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Remove 2 hoses from suction jet pump -black arrows-.
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Blow air through side port -white arrow-.
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If air exhausts through lower port:
TIP:
Suction jet pump is not clogged. Continue with diagnosis.
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If air does not exhaust through lower port:
TIP:
Suction jet pump is clogged. Replace suction jet pump.