Help Identify this sound/problem - Ford F150 Forums - Ford F-Series Truck Community.

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Old 12-09-2013   #1  
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Default Help Identify this sound/problem

My truck started knocking after warming. Here are some before after vids. any ideas as to whats wrong. Also noticed intermittently dropping oil pressure.

While cold.

After warming.
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Old 12-09-2013   #2  
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That almost sounds like an exhaust leak. Warm it up and torque down the exhaust manifold bolts starting the in the center and working outwards. I don't have the torque specs, but a Haynes manual should be able to give you that info.
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Old 12-12-2013   #3  
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Probably there could be a problem with the rings or even the pistons. Does it guzzle up too much gas?
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Old 12-14-2013   #4  
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My truck does the same with the oil pressure light I think its just a bad sensor. Only gets screwy when its cold
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Old 01-20-2014   #5  
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Sounds like a piston slapping,
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