1990 BMW 525i hissing sound

1990 BMW 525I
160,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
RYAN2000
  • MEMBER
  • 1 POST
theres a hissing sound came out under the hood
Feb 28, 2010 at 8:40 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
MHPAUTOS
  • CAR REPAIR CONTRIBUTOR
  • 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)
Feb 28, 2010 at 9:04 PM
Advertisement