S4 Sedan L5-2226cc 2.22L DOHC Turbo (AAN) (1992)
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Service
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check for maximum boost pressure as per Repair Manual, Repair Group 21, section 21-10. If boost pressure is low, check the following:
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visually inspect flexible pressure hose -A- for any minor surface cracks or tears. Replace hose if necessary.
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check for split seams on pressure hose -B- from turbocharger to bypass valve.
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check that O-rings and reinforcement rings -C- are in place at connection of metal tube to intercooler. Replace parts as shown in illustration or parts
fiche.
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assure that all clamps are tight on pressure hose of air intake.
