I looked at the service bulletin for the spark plugs. Don't try to remove plugs on a hot or warm engine. Room temp only. Don't use air or power tools for plug removal. Try to loosen 1/8 to a 1/4, then use carb cleaner in spark plug well, just up to the hex nut. Let set minimum of 15 minutes before going further. I wasn't sure this site allowed you to cut and paste from automotive database or print screen? If you have procedure that works for you on plug removal that differs from service bulletin, great.