valve job or what?
no smoke but definite stink, engine runs smooth no problem starting, got 221k, 4.7, no mods, new plugs and oil....
I would try some fuel cleaner. Sea foam is what I use. Add it to a tank of gas as directed on the can. Also tho sometimes cat converters give off a weird smell right before they start to fail.
Sea foam will not help for a cat issue but it will clean the valves of any carbon build up.
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