The eggy smell indicates a possible fault with the catalytic converter.
As to the misfiring, have you checked the spark plugs and related components, fuel pressure etc?
Sounds like the timing is off. Possible problems: Distributor is off, wires are on wrong, or timing belt jumped some teeth.
Check to see if timing is OK or not. Also check for a plugged or restricted catalytic converter (exhaust).
Tuesday, June 14th, 2011 AT 12:27 PM