My sister has a sweet '95 940 sedan. The sedan was in my possession for a few months probably around 7 years ago.

I finally convinced her to bring me the car to look it over and do some maintenance. I changed water pump, tensioner, timing belt, camshaft seal, accessory belts, trans fluid.

It appears that the same NGK plugs are in the car from when I tuned it up 7 years ago. In my cars I'm usually able to get the plugs out with ease with a 3/8" ratchet. I couldn't budge these plugs, tried a bit of back and forth and they really weren't going anywhere. For now I'm letting sleeping dogs lie, but the car only has 112k on it and with a great body it has lots of life left so I'd like to get those plugs out and changed at some point. The engine runs perfect right now, just wanted to change the plugs, cap and rotor in the spirit of routine maintenance.

My next attempt will be a good soaking with PBlaster but beyond that I'm not sure what to do. I certainly don't want to be stuck holding a spark plug with aluminum head threads in it, but at the same time I realize that the plugs cant stay in there for another 7 years... or can they?

Thanks
Matt

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'90 245 285k, '93 945 296k