I just seafoamed and it got worse. I have done it successfully before, but used too much this time probably. Idle is not very confident, and when accelerating/cruising, it feels like someone is feathering the brake randomly. Could I have fouled the out of my plugs? I think i've heard of that happening when over-using seafoam.

 

change out your plugs and wires and a new rotor and see how it runs after that