4AGZE SC Runs Rough at WOT [Archive] - Toyota MR2 Message Board

fine, change, noise, rusty, start, switch, coil, runs, signal, filter, thought, normal, part, throttle, blue, overheated, leading, guessing, prongs, speed, wires, stated--drove, idle, south, error, plug, consistently, metal, high--2000rpm, stay, webers, simple, dual, condenser, starlet, called, electronic, ignition, spent, square, years, mr2s, plastic, black, time, spare--ive, codes--i, cold, injector, triggered

A recent problem has crept up on my new to me 88 SC. Under normal part throttle acceleration the car runs fine. When I go WOT and the SC kicks on the engine feels and sounds like it has a misfire--it is slow to accelerate but makes 7psi. I initially thought maybe there was a lean fueling issue but I triggered the cold start injector to run on a switch I activated at WOT. No change. I thought maybe it was a bad coil or ignitor--swapped those with some spares--no change. New spark plugs--no