Having problems with your 1990 Ford F250 ?
Removing broken sparkplugs - 1990 Ford F250
Having been in that situation before i was able to use a large flat blade srew driver to turn it out by twisting on the ground electrode. however if the threaded sectio does not turn somewhat freely you will be in aworld of hurt as you have likely heated the aluminnum up with the excessive torque causing it to melt the threads to the steel plug. you may also want to try reverse drill bits (matco make the best set in my opinion) as when it bites it tends pull whats being drilled out with out have to really drill it out.
Repair Help & Product Troubleshooting for 1990 Ford F250
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