vacuum leak sound
03-24-2002, 01:59 AM
#1
Advanced
Thread Starter
Member Since: Oct 2000
Location: modesto
Posts: 70
Likes: 0
Received 0 Likes
on
0 Posts
vacuum leak sound
i know this sounds dumb, but i just bought my 93 coupe and its making a super loud sucking noise from the passenger side rear of motor almost as loud as the intake makes, i cant tell where its coming from,,is it normal or what, it runs and idles fine and no codes. maybe its normal.. thanks dan
03-24-2002, 02:19 AM
#2
Team Owner
Member Since: Dec 2000
Location: SE NY
Posts: 90,675
Likes: 0
Received 300 Likes
on
274 Posts
Cruise-In II Veteran
Re: vacuum leak sound (zer2che)
I don't think it's normal. Hold a piece of rubber tubing to your ear and move the other end around near the sound to isolate the area.
03-24-2002, 10:57 AM
#3
Race Director
Member Since: Oct 2001
Location: Canton GA
Posts: 12,745
Received 89 Likes
on
35 Posts
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In VI Veteran
St. Jude Donor '03-'05-'06-'10-'11-'12
Re: vacuum leak sound (zer2che)
How do your brakes feel? I think the vacuum hose for the brake booster goes around the back to the intake somewhere around there. I can't remember... but it is a big hose and it would make a very loud hiss if it was leaking!
03-24-2002, 11:04 AM
#4
Former Vendor
Re: vacuum leak sound (92Shawnster)
You definately have a vacuum leak and if you have a scanner your IAC will be pegged at zero trying to bring it down and you will definately be running extremely lean at idle. Throttle response will also suffer.
I used ether (sp?) to find mine. Propane seemed to be to hard to pinpoint.
I used ether (sp?) to find mine. Propane seemed to be to hard to pinpoint.
03-24-2002, 01:06 PM
#5
Melting Slicks
Re: vacuum leak sound (ski_dwn_it)
Ether or carb cleaner works great to find vacuum leaks. Just take a can of either one and spray around where you think the leak should be and when you notice a change in idle you have found your leak. Pretty simple.