'87 Turbo-T. The car bogs badly at launch but will ramp up if brought up slowly. Also will backfire back up through the intake ( pre-ignite ? ). Does not want to idle at start-up and will float up & down as though searching and will stall unless you feather the peddle. Once warm, will maintain idle. I seem to detect a miss, it's not smooth. It's the same with the stock chip or mini-mag performance chip. Prior to this and for some time, at start-up, the exhaust smelled super rich, with blackish not grey, smoke until warm. Replaced the fuel filter. Fuel pressure is good at 28#. Got 93 octane in it with a can of 108 octane boost. Ck. Eng. Lt. will flutter at times, then stay out. Unplugged mass air and noticed a slight change, probably ok. KN intake filter clean. Suspect a flat or dead injector or plug ? ECM good. Jacobs wires. ICM issue ? How do you test an injector ? Getting one out looks rough.
Jan 14, 2010 at 3:24 PM