O'Rattlecan
Redneck Prognosticator
Hi guys,
My 1994 has a chronic misfire. It's fouled 2 plugs (same cylinder, only it's done it twice.) It's cylinder 4 (passenger back).
The motor has about 5k miles on it since I rebuilt it a few years ago. I replaced the distributor cap, distributor rotor, spark plug wires, and ignition coil. I am ready to do the plug again, but wonder if it's probably the fuel.
If and when I pull the spark plug, I guess I'll determine whether it's running rich or lean.
Help me think through this. If it's black and soiled, is it running rich? And then if it's white and has carbon, is it running lean?
Are both scenarios likely to be the injector since it's the only cylinder that's fouling?
Ryan
My 1994 has a chronic misfire. It's fouled 2 plugs (same cylinder, only it's done it twice.) It's cylinder 4 (passenger back).
The motor has about 5k miles on it since I rebuilt it a few years ago. I replaced the distributor cap, distributor rotor, spark plug wires, and ignition coil. I am ready to do the plug again, but wonder if it's probably the fuel.
If and when I pull the spark plug, I guess I'll determine whether it's running rich or lean.
Help me think through this. If it's black and soiled, is it running rich? And then if it's white and has carbon, is it running lean?
Are both scenarios likely to be the injector since it's the only cylinder that's fouling?
Ryan