Question about 1997 Audi A6

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Vacuum pump brake lever is very strong

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Hi Rudi, It would seem as if you have a brake booster failure, which means that either a vacuum hose is broken or detached, the one way valve has become defective in the same line or the servo diaphragm in the booster is damaged. Open the hood and look at the rear of the engine compartment. Behind the brake master cylinder is round container looking device. The brake master cylinder is bolted on in the center and it has a pipe joined to it. That is the vacuum pipe you need to inspect. The one way valve is also mounted between the two parts of the hose. Inspect those first and if the problem is with the servo, let me know so that we can continue. Regards John

Posted on Dec 09, 2012


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