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Aug 31, 2007 | 02:10 PM

cpthowdy

Thread Starter

Senior Member

Joined: Jul 2007

Posts: 586

From: NORCAL

help

when i de-accelerate from around 4000 rpm, i notice a very loud pop noise that is coming out from the exhaust.i've asked around but no-one really helped me like FORD!!!any ideas of what is making that (loud)POP!!

Aug 31, 2007 | 04:04 PM

4.6 Love

Super Moderator

Joined: Sep 2004

Posts: 6,312

From: Mexico

sounds like you have a backfire, have you checked your plugs?

Sep 1, 2007 | 01:47 AM

mpt_1962

Senior Member

Joined: Jun 2007

Posts: 1,041

From: Twentynine Palms, CA

yeah...change your plugs and clean out your MAF

Sep 1, 2007 | 09:14 PM

cpthowdy

Thread Starter

Senior Member

Joined: Jul 2007

Posts: 586

From: NORCAL

ok,ima do that and will let u kno a.s.a.p

Sep 2, 2007 | 09:43 AM

03gtmustang

Super Moderator

Joined: Jan 2005

Posts: 3,440

From: Northern Va

decelerating from a high RPM like that will almost always back the exhaust backfire. Nothing to be worried about.

Sep 2, 2007 | 09:53 AM

r3dn3ck

Wowbagger hates me too!

Joined: Nov 2005

Posts: 9,865

From: Magrathea/California

if you have offroad exhaust you should expect that sound to be more audible. How bad is it? Like a single loud pop or hundreds of loud pops in rapid sucession?