brake is hard

Asked by Apr 24, 2013 at 11:43 PM about the 1990 Mercedes-Benz 300-Class 4 Dr 300TE Wagon

Question type: Maintenance & Repair

the car was not runing so good be be for the brake got hard

3 Answers

your brake booster is leaking vacuum~

2,895

if the engine has a misfire, or is not working good the vacuum gets low and the brake gets hard. you must fix the engine failure before you test for vacuum leak.

Best Answer

but this HUGE vacuum line Causes the misfires (could put a hose clamp on that line, then diagnose...got a point Hector)~

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