2008 BMW 318i brake failure

2008 BMW 318I
88,000 MILES
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GAZLA007
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  • 2 POSTS
if your accelerating down the road and brake they work fine but say i pull of my drive without engine revs brake pedal is hard as if servo isnt assisting brake pedal just like when engine isnt running
Oct 1, 2013 at 7:02 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Either you have a vacuum leak to the booster or the booster itself is leaking.
Oct 1, 2013 at 5:51 PM
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GAZLA007
  • MEMBER
  • 2 POSTS
by booster do you mean the electronic one that sits on the manifold as ive changed it also cant hear any leaks
Oct 10, 2013 at 7:55 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Is there a vacuum booster behind the master cylinder on this year?
Oct 10, 2013 at 8:53 AM
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