Re: Truck misfiring after sitting for a couple weeks
These ls engine are know for fuel injectors sticking or clogging after sitting for a while . Ethanol fuel is mostly the blame . I would remove the injectors and clean them . I made me a injector cleaner from a syringe from the drug store and carb cleaner . Worked really well . Look on YouTube , there is a video showing how to do it . I flushed the injector both ways .
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