what I do with bad injector is pull it out disasimble and clean the crud trapped by the screens.assemble it with clean gasoline,and put back in motor.Change fuel filter if alot of stuff in injector.If that fails I replace with new injector they can wear out

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt