BenzWorld Junior Member
Date registered: Aug 2011
Vehicle: 1979 Mercedes Benz 450 SL/ R107
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Fluid level is where it's supposed to be. If it was the vacuum hose leaking, would I not notice it sucking air into the system through the brake pedal? Is there any testing (troubleshooting) I can do to make sure what exactly it is? For my own piece of mind, why would I not just replace the hose, the booster and possibly the check valve anyway, if there are no tests or troubleshooting that could be done to narrow it down?