a couple of weeks ago, my 86 gn began to miss on top end..you could hear something popping, but now it is getting worse, even at idle. the car responds but after a couiple of pops, it goes but then pops again, you can hear the pop in the engine. i put a fuel gauge on it and the pressure is good, changed the plugs, after the plugs, it has gotten worse and is pretty bad w/ the ac on..i know the descrpition may seem broad ,but any suggestions?
chad stock 86 gn