I need help with a engine problem. I have a 94 Fleetwood Brougham with the 5.7 LT1 engine. When starting cold it runs great. When it gets up to full temperature however (about 20-30 min drive time) it starts running like it's misfiring and I often can smell unburned gas.
I have replaced the temperature sensor, the ICM, the distributor cap and rotor (OUCH $$) new plug wires, and the plugs are platnium about 6 months old. What puzzles me is that it runs perfect until it gets hot. I would welcome any tips that others may have run across... Thanks