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» Northern California Ford Owners     » Automotive   » Tech Talk   » Rattling sound from intake

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Author Topic: Rattling sound from intake
VENOMUS PONY 5.0
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It's a boosted 95 mustang after I got on it today I noticed at the light that it was making a rattling noise comming from the the intake manifold. It still runs strong And doesn't idle funny at all. What suggestions or opionans do you have.
Sounds like a exhaust leak in the intake manifold
Oil pressure
Idles fine
Runs strong
No misfires
"only at idle"
Goes away after revving the motor then rattlling exhaust leak type of noise at idle

[ October 07, 2012, 01:33 PM: Message edited by: VENOMUS PONY 5.0 ]

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If You Want More Inches - Stroke It!!!
Mystery stang in the works..

Posts: 1602 | Registered: Jul 2007  |  :
LXjames
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Does it make a metal on metal rattling sound?

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On Point Motorsport prez.
King Lx

Posts: 4761 | From: Pittsburg CA | Registered: Mar 2011  |  :
VENOMUS PONY 5.0
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quote:
Originally posted by LXjames:
Does it make a metal on metal rattling sound?

Hard to tell can be.. I touched the valve cover and don't feel anything there. Get my ear closer to the manifold and its loud at the intake manifold. And literally sounds like a exhaust leak

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If You Want More Inches - Stroke It!!!
Mystery stang in the works..

Posts: 1602 | Registered: Jul 2007  |  :
BIGBALLFACTOR
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You going to have to record the noise an post it up anything else is going to be a big ass guess
Posts: 6908 | From: okc | Registered: Dec 2006  |  :
LXjames
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quote:
Originally posted by SETONKILL:
You going to have to record the noise an post it up anything else is going to be a big ass guess

+1 but I've heard this before and it's most likely intake back fire. Could be chased by a bent pushrods or a collapsed lifter.
My buddy foxx5.0 had the same issue and it does sound like a tick and doesn't make any particular noise it's just this wierd tick/popping noise in the intake

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On Point Motorsport prez.
King Lx

Posts: 4761 | From: Pittsburg CA | Registered: Mar 2011  |  :
351stang
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Might be pinging not enough fuel maybe

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tows b 4 hoes

Posts: 263 | From: richmond | Registered: Apr 2007  |  :
VENOMUS PONY 5.0
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It's got a aeromotive 340 in tank with 42lb injectors and adjustable reg

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If You Want More Inches - Stroke It!!!
Mystery stang in the works..

Posts: 1602 | Registered: Jul 2007  |  :
BlackNGold
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Do you still have the EGR tube hooked up on the RH header?...My old 94 leaked there pretty bad....

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-SLOWER TRAFFIC KEEP RIGHT-

Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001  |  :
vortek01gt
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Could just be a weak lifter, and when you rev it it gets pumped up and quiets down. If you think its an intake gasket leak, spray the manifold with brake cleaner around the gasket and see if idle changes

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2001 GT s-trim h/c t56 AED tuned
456hp 415ftlb 10psi-street
478hp 427ftlb 12psi-race
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Posts: 622 | From: martinez CA | Registered: Jul 2010  |  :
VENOMUS PONY 5.0
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Problem solved thanks for the input. Had to do with the lower intake manifold.

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If You Want More Inches - Stroke It!!!
Mystery stang in the works..

Posts: 1602 | Registered: Jul 2007  |  :


 
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