Just did the injector and that gasket as it was leaking oil (i know that sounds weird). It was because it had been miss-cut at the factory and was forming a lip that caught oil vapors from the pcv system. Chrysler’s stellar quality control for you.if it is clean from the gasket down to the throttle plate it is a good bet that the TBI is leaking.
What kind of oil do you use?
if the motor has high mileage you've got nothing to lose!
The spark plugs may have been befor but they have been out for a week.Are the spark plugs fouled?
Does the oil smell like fuel?