A4 Quattro Wagon L4-1.8L Turbo (ATW) (2000)
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Using T-piece connect test hose from VAG1397A Turbocharger Tester between intake manifold and fuel pressure regulator.
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Guide test hose over rear corner of hood, through passenger side window and into vehicle interior.
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Turn turbocharger tester on and select measuring range -I- (absolute pressure).