Señor Brat

So I swapped over the coil from my 82 and alas, the problem persists.. Now it's bad at idle warm or cold.. Back to the cat perhaps? It does sound like too much air is being sucked down by the carb, which could be what you were describing about the air backing up in the manifold.. Any other suggestions?

Also on the subject of the supercoil, I vaguely remember reading somewhere that I may need an extra resistor (can't quite remember) to install the supercoil due to the higher voltage? I could be mistaking but thought I'd ask just in case...

Hmm, didn't think of that but you might be on to something! I was actually thinking of replacing it with an Accel supercoil (I believe this is the one without the horizontal mounting issues I've heard about) last month with the rest of the maintenance, but passed on it. I have 160k and it's all original, so I figure it's about time regardless.. I'll grab my dvom and let you know the results. Only thing that had me thinking Cat was that I seafoamed it to high hell for the first time ever and figured that could have caused my cat to plug up, but from what you described, I think the coil is the prime suspect. Thanks guys, this forum is awesome!

Ever find out what the problem was?

Hey all, long time reader first time poster here. I'm hoping one of you subie geniuses could help me diagnose a wired problem with my 85 GL Brat.. Details & Symptoms: - starts quickly, runs great & drives great for about 5 - 10 miles (varys each time) - after reaching normal temp & driving steadily for a few miles the car starts to hesitate a bit (not much, barely noticeable) - its typically after a stop that the real problem hits. - takes off normally but after reaching 2/3 throttle or so, it completely loses power and seems like there's no fuel whatsoever reaching the engine, forcing me to limp over to the side of the road. - From that point on, even in neutral, the car struggles when the accelerator is pressed and wants to die unless I floor it.. It idles flawlessly. - problem didn't start until after the maintenance listed below.... Recent Maintenence - Changed plugs, cap, rotor (forgot wires, doh!) - seafoam treatment - oil, air filter, both fuel filters (twice) - radiator, thermostat & more.... Suspects - carburator? I cleaned it but it seems like its getting too much air & o fuel when it's dying. Weird thing is it runs fine for a few miles while cold/at temp - cat? The exhaust is probably the most neglected system on this vehicle. I know little about cat symptoms and have tried to search the forum but couldn't tell if it truly is the culprit.. - pcv?? I doubt it, but i popped off the t connector on the drivers side of he engine bay, and it was pretty gummed up so I shot it with some Seafoam spray and let it set before starting it back up, but the problem persisted... ANY HELP IS APPRECIATED AS ITS SNOWING AND I WANNA PLAY, haha Thanks!