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Ranger picked up a miss and the rear plug was black so figured i had something wrong there, also on start up ran rough for a few seconds , then fine, suspect a clogged open injector, put a full can of seafoam in the gas and ran almost a full spary can of choke cleaner through the intake system, seems fine now, much better, so maybe that was it, thought perhaps i was getting a head gasket leak but havent lost any antifreeze all winter, wiull be very happy if just a clogged injector, guess i should swap them out after 384 k miles, lol. not real easy though , or cheap!
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