1990 BMW 525i hissing sound

Tiny
RYAN2000
  • MEMBER
  • 1990 BMW 525I
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 160,000 MILES
Theres a hissing sound came out under the hood
Sunday, February 28th, 2010 AT 8:40 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

This will normally be a vacuum leak, you will have to get a mechanic to go over the induction and brake booster and check for a leak, start there.

Mark (mhpautos)
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Sunday, February 28th, 2010 AT 9:04 PM

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