Here is the brief list of replaced parts that are known to be good:

Plugs
Wires
Starter
Alternator
Battery
ICM
Optispark and harness
PCM
Fuel Pump
Coil
Grounds
Battery leads

Car turns over. Plugs are wet. Spark at the plug. Will not start. Tries to catch but will not. Partially depressed or fully depressed gas pedal is when it wan't to catch but instead of catching it just stumbles a bit.

Need ideas. This is getting expensive.

 

Sounds like you have replaced most of the common problems. Did you check the fuel pressure?

 

Seems to me engine flooded. Have you tryed pulling out something from fuel pump curcuit (relay, fuse, etc..) and cranking engine holding gas pedal to the floor for a some time. It can help, at least it worked for me. Are u sure your plugs are still ok? I killed a set of 8 plugs (all fouled) in a couple of hours when my engine had problems and running exessively rich.

 

Are you losing compression? shot rings? blown head gasket?

Maybe you've got excessive carbon build up in the heads?

Just some ideas