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4.2 engine rattle

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Old 02-20-2011, 11:45 AM
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Default 4.2 engine rattle

My 2007 4.2 with 46,000 rounds rattles excessivley when i accererate. It sounds lke a lifter rattle on a older engine but only makes the noise when the engine is working hard on the freeeway in 5th gear. Is this a common noise for these engnes? any suggestions?
Old 02-20-2011, 12:02 PM
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yep its common, most likely its a broken bushing on the imrc
Old 02-20-2011, 12:56 PM
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Whats the IMRC? Our 4.2 is starting to make this sound also.
Old 02-20-2011, 12:58 PM
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This thread likely belongs in https://www.f150forum.com/f4/
Old 02-21-2011, 12:58 AM
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Welcome to f150forum.com... Lots of good guys and info here.. be sure to post some pictures



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