It's tricky, but can be done with a little elbow grease. Check the end of the thread for a little tutorial,
http://www.toyotanation.com/forum/showthread.php?t=177338
Good luck,
Pdiggity
You can try twisting them on the plug to break the seal. Sometimes it is impossible and you need to replace the wires.
Take the dipstick tube with you to the auto parts store, and see if they can match you up with one.
replace valve cover gasket. there are 4 small rings that seal the plug ports. this keeps oil out of the spark plug port.
IF YOU MEAN THE OIL IS DOWN IN THE SPARK PLUG TUBE. THERE IS A SEAL THAT IS IN THE VALVE COVER THAT GOES AROUND THE TOP OF THE SPARK PLUG TUBE, THEY GET HARD AND START TO LEAK INTO THE TUBES AFTER A WHILE. YOU WILL HAVE TO REMOVE THE VALVE COVER TO REPLACE THEM.
you can see if its leaking if you have the spark plug in tight and then fill up the spark plug tube with gas and see if it leaks out if it doesn't its still leaking from the top one
They seal oil/water/dirt out of the plug tube.
How do you replace spart plug tube seal of Honda accord LX 1994?
The oil drain plug seal is located on the oil drain plug itseft. So Next time you have your oil change. Since the oil drain plug is going to be out to drain oil then replace the seal with a new one. The seal goes right on the plug itseft. easy job.
Twist boot then pull, this will break the seal from the plug.
There is current leak. Find the leak and seal it.
For Hemi heads where the spark plugs are in the top of the head and there is a tube in the valve cover where the tube meets the head is the tube seal. It is basically an O ring.
usually the valve cover gasket and the oil seals on the top of the cover,replace gasket and the also the distributor seal