[pylon500]

The continuing saga;
Well, I finally had a go at the plugs, after reading all the posts relating to getting at them, I managed to remove all three on the left side, and get them all back in within the same day.
I mentioned somewhere that I was getting rough running, which seemed to get worse as the engine heated up
One day while idling roughly in the driveway, I began pulling off injector leads to trace the problem cylinder, appeared to be middle left.
Today I managed to get in and remove the front left (awkward, but not impossible) then the middle left (about the same, 'cause I was getting used to it) which all took me about two hours!
The back plug took me another two hours!!
Result; All the plugs were clean and looked OK The coil packs were a different story
My engine leaks a bit (the word sieve comes to mind) and some one has had a go at fixing it with that high temp orange silastic, they failed.
As such the coil packs all had a good covering of oil, dirt and assorted crud on them, Looks like you're right James, water blasting not such a good idea either, so they had a cleaning.
Was then I noticed the wires to the rear coil were bare just where they go into the coil, and also covered with grime. Was this the problem
Spent another hour getting the rear coil disconnected from the little plugs at the back of the engine then cleaned it, and covered the bare wires with a good shot from a hot glue gun
Another three hours, and I had it all back together Put the battery back in, and it started Then after ten minutes of warming up, IT RAN JUST AS ROUGH AS BEFORE
So now I'm at a loss WTHIGO! I can just about hear the guys down at Subaru rubbing their hands together.
Anyone got any ideas?
Arthur