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2008 BMW 318i brake failure

Tiny
GAZLA007
  • MEMBER
  • 2008 BMW 318I
  • 88,000 MILES
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
Tuesday, October 1st, 2013 AT 7:02 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,650 POSTS
Either you have a vacuum leak to the booster or the booster itself is leaking.
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Tuesday, October 1st, 2013 AT 5:51 PM
Tiny
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
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Thursday, October 10th, 2013 AT 7:55 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,650 POSTS
Is there a vacuum booster behind the master cylinder on this year?
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Thursday, October 10th, 2013 AT 8:53 AM

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