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66StangGuy · 03-30-2002, 04:05 AM

sounds like you have air in the line. bleed the brakes and see if that helps. i replaced the brakes in my 66 recently and needed to bleed the brakes. even if you didnt change the brakes you could have run low on brake fluid and ended up putting air into the line. Easy thing to check at least. i had the hissing sound too. if i pressed the brake slowly it seemd to have no sound but if i press it somewhat fast there would be a hiss.

03-30-2002, 04:05 AM	#5
66StangGuy Registered Member Join Date: Feb 2002 Location: Diamond Bar Posts: 258	sounds like you have air in the line. bleed the brakes and see if that helps. i replaced the brakes in my 66 recently and needed to bleed the brakes. even if you didnt change the brakes you could have run low on brake fluid and ended up putting air into the line. Easy thing to check at least. i had the hissing sound too. if i pressed the brake slowly it seemd to have no sound but if i press it somewhat fast there would be a hiss. __________________ 66 mustang-292-Holley 4160-World Castings Windsor Sr.-Hooker super comp headers-MSD box & Coil.3.55 gears. B&M Z-Gate-Black leather racing seats with 4pt harnes.