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oil pressure

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Old Feb 25, 2018 | 05:56 PM
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oil pressure

2011 f150 5.0L, 134k. 2 weeks ago oil pressure gauge dropped to 0 and back to normal. also, started making a loud squelch sound. oil and filter changed every 5k added some lucas and sea foam. I've changed the oil pressure sensor switch, replace upper belt and main drive belt. Still have same issues, truck runs fine with no negative performance issues. idles fine at 500-600 rpm, still has power to haul, steep grades etc. any ideas out there that could be the problem? TIA.
 
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Old Feb 26, 2018 | 09:44 AM
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It's common for the plastic timing chain guides to break, fall to the bottom of the oil pan and clog the intake of the oil pickup.
 
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Old Feb 26, 2018 | 07:51 PM
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It does sound like pickup is getting clogged. I'm not sure how easily pan can be removed but it might be worth a look?
 
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