CRAZY M44 Problem

[speedracerf4i]

My problem is as yours, but my rev limit is only 2K.

I was driving on the freeway yesterday and all of a sudden, I lost power (50%). The engine still runs as if I was driving in neutral. A cell came up in which I found out to be "cylinder 1 misfire".

I was able to slowly drive home at max speed of 40MPH (5th gear) with my emergency blinkers on. There is no hesitation on the engine at all, just feels like there is a long accerelation lag and driving a 20 HP car.

I checked the spark plugs and they are firering OK, though the spark was kind of weak. I am not sure how strong the spark had to be. The engine was idling fine at 800 RPM smoothly even with 1 plug off.

The exhause smelled like unburned gas and from searching, I narrow down to a few culprits.

1. Spark plugs - I checked all 4 and they are firering (pulsating).
2. Plug wires - If the plugs are firering, can the wires still be bad?
3. Ignition coil - I am getting sparks and there is no hesitation on the engine. Can this be bad?
4. ECU - This is an expensive unit with no way to tell if this is good or not right?
5. Fuel injectors - The unburn smell may suggest that it's delivering fuel OK. Will this throw a cell if bad?
6. Cam Position sensor - The engine has no weir vibration though. And I didn't get any cell related to this.

Maybe I am missing something else. Please help!!!