2003 F250 5.4 tapping/knocking noise - Ford Powerstroke Diesel Forum
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Old 05-04-2014, 11:51 AM
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2003 F250 5.4 tapping/knocking noise

Have an 03 super duty with the triton 5.4. Seems to run and drive fine but has a pretty loud tapping noise, the more throttle I give it the more pronounced it gets. Pretty embarrassing around town. Changing the oil did nothing. 150k miles. I dont know if this is common or what but not the first 5.4 super duty i have seen that taps like this.
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Old 05-04-2014, 12:44 PM
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Top end maybe? If it's more of a knock then it's bottom end.
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Old 05-07-2014, 06:30 PM
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Not a knock, just a constant tapping noise. I've seen plenty of 2 valve 5.4 super duties make this noise.
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Old 06-20-2014, 08:01 PM
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Exhaust Leak?
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