post 5k "leak/vibration" sound
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post 5k "leak/vibration" sound
I have a 1988 GTU. It recently started making a noise that sounds something like a leaking/purging line after 5k all the way to redline. The temperature remains constant and oil pressure is normal and it doesn't affect the performance either. What could this be? I will drive my car under 3k until I get this figured out.
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To better describe the sound and get more responses, it is a hissing sound. My friend joked around and said its my "nos" I will jack it up and take a look at the piping tomorrow.
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It sounds like its coming from behind the firewall on the drivers side. I know the airpump is on the other side, but ive been searching and it might be that the silencer hose popped off...the problem is I cant find it.
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The problem comes and goes. I really want to fix it so I wont have to worry about it anymore. Does anyone have any suggestions of what it could be? I dont think its my cats, I looked under the car and they where all in tact and the heat shields where still on them. I didnt have time to actually remove them though. Could it have something to do with the air pump?
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My car is completely stock. I havent touched anything yet, and I know that the previous owners havent touched anything either. What could the ACV have to do with this?
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