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Trivia: Vacuum Noise

Printed From: West Coast Fieros
Category: Technical Topics Forum
Forum Name: Technical Questions and Discussions
Forum Description: Got a technical question about your fiero? ask it here.
URL: http://www.westcoastfieros.com/forum/forum_posts.asp?TID=2450
Printed Date: 25 April 2025 at 7:28am
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Topic: Trivia: Vacuum Noise

Posted By: 86_Fiero
Subject: Trivia: Vacuum Noise
Date Posted: 11 May 2011 at 5:08pm

Alright I have a vacuum noise and I need to find it. I have
a hunch it's that lower intake plenum tube to the backside
of the throttle body but I'm not sure. If it is I'm going
to silicone it and put it back into the throttle body.
Should solve it. If not.. Suggestions?

http://www.youtube.com/watch?v=2EDcA-gAzVE

Cheers,
Cody (G_Reaper PFF)

Replies:

Posted By: Dawg
Date Posted: 11 May 2011 at 5:20pm

Get a can of WD-40. Spray it where you think the leaks are. The car's RPM will rise when some of the WD gets sucked in.

Works great.

The Dawg

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You dream it up....I'll make it

Posted By: Romeo
Date Posted: 11 May 2011 at 6:04pm

Damn, you beat me to it. lol

Also, be careful with your silicon application when you do find the leak. It's never fun killing a sensor with one, or worse yet, sucking it in to the combustion chamber.

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Never shift into reverse without a back-up plan.

Posted By: 86_Fiero
Date Posted: 11 May 2011 at 7:14pm

I didn't think of wd-40. Nice one. I also have a fog
machine I'll be using. But I'll do all that after I have my
springs cut.
About the silicone. I won't be going crazy with it.