I have a '94 Dodge Ram 1500 with a 5.2L Magnum that suffered an engine fire due to a fuel leak back in July. The damage that I have found so far consists of: melted air intake, all plug wires burned, most vaccuum hoses burned, convoluted tubing surrounding wiring harness burned, plastic cowl melted, distributor cap seems like it might be burned.
I have replaced the fuel rail assembly (the leak seems to have started at the tube connecting the two fuel rails; I replaced the whole thing with a used assembly from a salvage yard), all the vaccuum lines, the plug wires, and checked the wiring harness for damage. There does not seem to be any damage to the wires themselves, just the black convoluted tubing the harness was wrapped in. I have not yet replaced the distributor cap, but will be doing that this Friday.
So that leads me to the problem: When I first start it up, it runs perfectly (no misfire, hesitation, etc), but after the engine reaches operating temp, it develops a noticeable off-idle hesitation. The OBD I is not showing any trouble codes at this point. Fuel pressure is a steady 40 psi, so that is not an issue.
Other than the distributor cap, any ideas?
I have replaced the fuel rail assembly (the leak seems to have started at the tube connecting the two fuel rails; I replaced the whole thing with a used assembly from a salvage yard), all the vaccuum lines, the plug wires, and checked the wiring harness for damage. There does not seem to be any damage to the wires themselves, just the black convoluted tubing the harness was wrapped in. I have not yet replaced the distributor cap, but will be doing that this Friday.
So that leads me to the problem: When I first start it up, it runs perfectly (no misfire, hesitation, etc), but after the engine reaches operating temp, it develops a noticeable off-idle hesitation. The OBD I is not showing any trouble codes at this point. Fuel pressure is a steady 40 psi, so that is not an issue.
Other than the distributor cap, any ideas?