what do these tell ya?
See an extract from the service manual below, looks like "a" to me:
a. A wet, black and shiny deposit on spark plug base, electrodes and ceramic insulator tip indicates an oil fouled spark plug. This condition may be caused by one or more of the following: worn pistons, worn piston rings, worn valves, worn valve guides, worn valve seals, a weak battery or a faulty ignition system.
b. A dry, buffy or sooty black deposit indicates an airfuel mixture that is too rich and/or engine idling for excessive periods of time.
c. A light brown, glassy deposit indicates an overheated spark plug. This condition may be accompanied by cracks in the insulator or by erosion of the electrodes and is caused by an air-fuel mixture that is too lean, a hot-running engine, valves not seating or improper ignition timing. The glassy deposit on the spark plug is a conductor when hot and may cause high-speed misÞring. A spark plug with eroded electrodes, heavy deposits or a cracked insulator must be replaced.
d. A spark plug with a white, yellow, tan or rusty brown powdery deposit indicates balanced combustion. Clean off spark plug deposits at regular intervals.
a. A wet, black and shiny deposit on spark plug base, electrodes and ceramic insulator tip indicates an oil fouled spark plug. This condition may be caused by one or more of the following: worn pistons, worn piston rings, worn valves, worn valve guides, worn valve seals, a weak battery or a faulty ignition system. these have been replaced, battery was farked and so was the regulator.... yep should of bought a ticket... the bronco's win....hhhaaaaaaaaaaaaaa looks like ill be spending more time in the shed than on the road...lol
I think I seen that look before Seaeagle. Mine look like that after 8000k.
Zapper
