Car was working fine, had been no problems for quite awhile, when I parked it in the garage a few days ago. Went to start it yesterday, and it starts up but feels like idling and driving on 3 cylinders. I replaced ignition coil, cap, rotor, plugwire set, and swapped out each plug in turn - no change. No conclusive change for the worse if any plugwire pulled - unfortunately I don't have the guts (or the right tools) to do it while running. I pulled the cam cover, but saw no missing or wobbly rockers or other obvious problems. No exhaust vapors of any kind noted while running in this condition, plugs all looked fine and about the same.

What are the odds for a clogged screen to one injector, or a sudden failure in the fuel system to cause this behavior? Is there any other place to look first? Looking for a direction here? Thanks for any help!

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7