1990 BMW 525i hissing sound

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

MHPAUTOS

MECHANIC
31,938 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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1990 BMW 525i hissing sound

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