I have a 1.9 TDI engine. Recently the brake booster and vacuum pump was changed. The vacuum pump did not deliver vacuum because of a leak and the brake booster had a hissing sound when applying pressure on the brake pedal. After the repair, the brake pedal is still very hard to with limited braking pressure, just like there was no vacuum. I checked the hose from the pump to the booster and it seems to be without any leaks. When I put my finger in the end of the hose I also feel a vacuum. The brakes are also bleed after the repair. Any ideas what the problem might be?
1,9TDI brake problems
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