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BLocking Air Vents

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Old Aug 23, 2004 | 07:04 PM
  #1  
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From: SA
Default BLocking Air Vents

I think my other post came out blank because i was using Mozilla.

Anyway,

I need to block incoming air from the air vents. I have an exhuast/header leak which filters through the inside of the car. Is there a sinlge point at which air enters the aircondition/heater system?

Cheers

John
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Old Aug 24, 2004 | 01:56 AM
  #2  
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From: Foxfield CO 1970 Convertible
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As far as I know, the air comes in to the car throught several places. Two are on either side just under the grate in front of the windshield. The intake to the heater/ac is on the passenger side. There is also the possibility that the various seals on the firewall have cracked and are letting air in...

But I can't imagine why you would want to plug the air intakes. You need air to breathe. I would spend my efforts on fixing the exhaust leak. It will be much easier and safer...
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Old Aug 24, 2004 | 04:19 AM
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From: SA
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Thanks for your help,

It seems the leak only happens when the pipes are hot, after 15 minutes of driving the smell starts.

Im thinking that maybe the manifold is coming off the head? It doesnt make any loud noise though, how do i diagnose where this leak is coming from?

John
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Old Aug 25, 2004 | 12:42 AM
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From: Foxfield CO 1970 Convertible
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If the manifold were coming off, you would hear a very loud sound like a car without mufflers. Since this only happens when the car is hot, I think you might have something dripping on the hot exhaust - like an oil leak or power steering fluid leak. Get the car hot, stop, and pop the hood. If you have something dripping on the exhaust, you will see smoke or steam rising from the area. From that point, you can try to trace the source of the leak. (Just a theory... )
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Old Aug 25, 2004 | 06:56 AM
  #5  
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From: SA
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Mmmm you may have something there!

I know for a fact that it is much worse when I accelerate hard. I always thought it was the extra exhaust + air pressure but it may be the high oil pressure. The other day, i notice smoke coming out from under the hood while stopped at the lights. There is nothing on the garage floor, so its only happening when the car is running.


Ill take a look, thanks for your help.
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Old Aug 25, 2004 | 09:51 AM
  #6  
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Sounds like a valve cover leak to me...
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Old Aug 25, 2004 | 11:19 AM
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From: Marietta Ga.
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Read this by vetfxer

https://www.corvetteforum.com/techti...=241&TopicID=3
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