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ticking sound

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Old Aug 3, 2012 | 07:11 PM
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Jonas Winslo's Avatar
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ticking sound
i have a 03 f 150 with a 4.6L and i have a slight ticking noise when the engine is under load but it have new spark plug in it and they are all tight and no exhaust leak's
 
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Old Aug 4, 2012 | 03:29 AM
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From: Joplin MO
Maybe spark knock?

Try a tank of premium gas.
 
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