have a 2003 dodge dually w 5.9 ho cummins.auto trans . truck has 85,000 easy miles on it.sits for weeks at a time w/o being driven.is now emitting white smoke on idle and smells like raw fuel.thinking plugged or dirty injector. any recommends for an additive or cleaner to use and how(like driving it wot or idling). also has hard wired edge juicer programmer w kn filter & no muffler or cat converter!
cleaned and serviced the air filter yesterday and has a full tank of fuel.