I used my car just yesterday, ran flawlessly all day. This morning at startup it ran very rough and would hardly stay alive. Was extremely sluggish and popped a couple times from under the hood, so I turned around and went back home. The CEL went on, and I pulled codes - P0300, 304, 305, 306 (misfire). I reset the CEL and parked it - used the other car instead.

Just got home and tried it again, this time it starts up and runs seemingly OK for about 3 or 4 seconds, then cuts out and the ETS light and message appear. I disconnected the battery and reset adaptations, and the result is the same.

HELP! Where do I begin?

I'm beginning to think I shouldn't have sold the 300E...

__________________
08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280