94 TBI 350. My engine seems to run strong given its 201k miles, but recently it’s been odd. Most of the time it runs fine, but every once in a while this issue pops up. It’ll start loping, usually on start (only after cooling down from being run before) or when the engine speed drops like when I’m coming to a stop and put in the clutch. It will lope like it wants to be an old Camaro but believe me shes stock other than the classic air cleaner flip. While it’s doing so it puffs out black smoke. But if you stay off the throttle it’ll do it’s thing and fix itself, not without a “SERVICE ENGINE SOON” of course. And now recently I’ve noticed white smoke more often, usually right after you rev it a lil and let off. It’s not a lot, but you can see it, and for sure smell it. Is she finally getting worn out after 201k miles? Or is this some TBI or EGR issue?