ok so have a tapping noise that i sometimes hear at idle but also can hear in the cab everytime my truck is under load from 1500 to 2000 rpm.. as soon ad i let off pedal it goes away.. idk if its the same tapping im hearing at idle but i do believe it is.. sound seems to be coming from driver side.. truck doesnt run different other than it does seem just a tad sluggish then before but barely noticable.. and when i first start up truck it does smoke a light blue haze for a minute or 2.. cant figure out what it is dont know if its injectors or valvetrain or injection pump or even main bearings... thanks
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