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Old 09-05-2015, 06:12 PM   #1
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Knocking noise

I don't have any knocking noises matching with rpms. It's just when I initially tap on throttle I hear a small knocking noise with the hood open. What could it be?


2004 Mustang GT 5 Speed Full Bolt Ons 385rwhp 450rwtq
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Old 09-05-2015, 06:39 PM   #2
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Quote:
Originally Posted by Speed_Mister View Post
I don't have any knocking noises matching with rpms. It's just when I initially tap on throttle I hear a small knocking noise with the hood open. What could it be?


2004 Mustang GT 5 Speed Full Bolt Ons 385rwhp 450rwtq
hard to say without more info
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Old 09-05-2015, 07:49 PM   #3
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Actually it's all around rpm range. But I can only hear it when I open my hood and rev on the cable under the hood. It seems to be only when I rev in throttle. I have a video will post later.


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7.6 @ 92.1 (1.6) in 1/8th
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Old 09-05-2015, 08:16 PM   #4
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I think I found it. May be an exhaust leak at headers. Looks like one of my header bolts backed all the way out and feel out. Lol. Sounded like a rod bearing or something. I know I got a little rod bearing wearing out cause I've had minimum metal shavings sometimes or its just dirt but I didn't know if the bearing finally just gave.


2004 Mustang GT 5 Speed Full Bolt Ons 385rwhp 450rwtq
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2004 Mustang GT 5 Speed
Full Bolt Ons
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12.1 @ 117.9 (1.7) in 1/4th
7.6 @ 92.1 (1.6) in 1/8th
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Old 09-05-2015, 11:35 PM   #5
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Forced was exhaust.


2004 Mustang GT 5 Speed Full Bolt Ons 385rwhp 450rwtq
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2004 Mustang GT 5 Speed
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12.1 @ 117.9 (1.7) in 1/4th
7.6 @ 92.1 (1.6) in 1/8th
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Old 09-06-2015, 01:43 AM   #6
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Thats really good to hear and im sure your releived as that would suck bad.

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