Sorry for cross-posting, but I'm desperate!

I've replaced the distributor, rotor, cap, wires, and plugs (3 different sets of plugs!!!)

First set was a Bosch super copper core (not the W7DC)..
they were carbon fouled in a matter of months. It took me a while to figure out that they were actually fouled b/c I didn't think they could have been the source of my problems.

The second set was Bosch PLATINUM... they fouled in a matter of 2 days.

So the other day I ordered the wires and W7DCs (copper core)... The car was running better than any of the other plugs...
But then they fouled after about an hour.

What the hell is going on? The only ignition part I haven't replaced is the coil. I figure if it sparks that means its fine.

Any help would be appreciated. TIA