I changed my plugs yesterday, and found oil on the tip of the 4th cylinder plug. A few months ago I had to change that plug, because the porcelyn on the inside of the plug had cracked off. (Obviously never found that cracked part) Is finding the oil on the plug a big problem?

Thanks

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2000 Ford Ranger XLT 4x4 Offroad Supercab (ZOMBIE SLAYER)4.0L, Four Door, Flareside,
Mods- 3" BL, 15x8 Black Rock D-Windows (Aluminum) 32x11.50 Falken Wildpeak AT3W, Kenwood Stereo, Custom Painted Grille, Black Aftermarket Headlights, Custom Ford Ovals by (buggman), '08 Seats, Herculined Rear Bumper, Mustang Dome Light... More to come..

??...

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2000 Ford Ranger XLT 4x4 Offroad Supercab (ZOMBIE SLAYER)4.0L, Four Door, Flareside,
Mods- 3" BL, 15x8 Black Rock D-Windows (Aluminum) 32x11.50 Falken Wildpeak AT3W, Kenwood Stereo, Custom Painted Grille, Black Aftermarket Headlights, Custom Ford Ovals by (buggman), '08 Seats, Herculined Rear Bumper, Mustang Dome Light... More to come..

my plugs are oily to but not on the tips i think mine is due to bad valve cover gaskets?

Can you post a picture?

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2000 XLT 4WD 4.0L OHV, 5 spd, Alabama Cylinder heads, Delta Cams Valve Train and Pushrods, JBA Headers, KKM Cone Air Cleaner, BBK Throttle body, Dynomax Cat-Back exhaust, Summit Racing drilled front rotors w/ EBC pads, Cobra rear disk brake conversion w/ Hawk pads, 8.8" 4.10 Traction-Lok

Are you sure it isnt just some shitty carbon on there?

Yea, Its Oil.. I will see if it is still visible tmrw, and post a pic. The Truck runs fine, just a rough idle on Start up..

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2000 Ford Ranger XLT 4x4 Offroad Supercab (ZOMBIE SLAYER)4.0L, Four Door, Flareside,
Mods- 3" BL, 15x8 Black Rock D-Windows (Aluminum) 32x11.50 Falken Wildpeak AT3W, Kenwood Stereo, Custom Painted Grille, Black Aftermarket Headlights, Custom Ford Ovals by (buggman), '08 Seats, Herculined Rear Bumper, Mustang Dome Light... More to come..