That engine is known to collect gunk in the oil system. That makes it hard for oil to get to the areas necessary, and causes engine wear. It sounds like that happened here. You might consider replacing that engine with the 3.3, which doesn't have that reputation.
The rich smell is probably just the computer trying to compensate for the oil getting past the rings/valves.
SOURCE: blue smoke
sorry to say blue smoke is oil and with what you've described sounds like the oil rings on the pistons have given up the ghost, time for a new engine or a rebuild sorry for the bad news. valve stem seals are the only other thing that will cause exhaust smoke but only when you first start the car never while running. hope i have been of some assistance.
SOURCE: Rough idle and generally running terrible!
if idling rough sound like air in system.and your injection pump timing is off.
SOURCE: replaced fuel pump, spark plugs wires, fuel
Need a little more info to fixya.
Have you checked the MAP, O2, Coolant temp sensors (as well as all the rest) and the wires running to them?
Have you tried unplugging the sensors one at a time and seeing if that changes things?
Have you checked the conditions of the vacuum lines?
Lastly have you scanned the compute for codes?
SOURCE: 1999 Dodge Intrepid, intermintently misfires, runs
take to autozone and have them check the engine light code to start it's free
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