Re: Catalytic converters?
If it is still idling poorly I would approach it from that angle. It's easy to work with in the garage. You have good fuel pressure at idle. A clogged catalyst usually won't effect the idle. The faces of the catalyst substrates can be viewed through the oxygen sensor hole.
Do a spark test. The spark should be at least 1/4" long, blue and make a nice snapping sound.
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