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Knocking Sound

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Old Mar 24, 2007 | 01:30 PM
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mad mech's Avatar
mad mech
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Unhappy Knocking Sound
97 F150 4X4 Automatic 5.4 liter

Will too much transmission fluid cause a knocking sound? Have checked exhaust, flywheel, engine no problems found to explain sound.
 
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Old Mar 24, 2007 | 02:23 PM
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Octane
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Does the sound only occur at startup? They are known for piston slap, which will cause a rattly sound for the first few minutes that the engine is running, but goes away once it warms up a little.
 
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