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FXD valve chatter

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Old May 3, 2010 | 02:42 PM
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Default FXD valve chatter

Got a 2004 FXD with 55000 miles on it. Running Mobil 4 cycle synthetic oil. Seem to be getting a lot of valve chatter when giving it the gas for a few seconds till I get above 3000 rpm. Especially notice it on steep hills. Any ideas or anyone else got the problem?
 
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Old May 3, 2010 | 06:14 PM
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What octane gas are you using?? 91 or higher
 
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Old May 4, 2010 | 03:45 PM
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93 octane
 
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Old May 4, 2010 | 04:21 PM
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detonation. Downshift.
 
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