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z3beemer · 12-10-2004, 01:05 AM

Sometimes it better to heat them up, then quench them quickly with water. Do this a few times, them blow all the water away from around the plugs with compressed air or shop vac. The expansion and contraction from heating and cooling will break the rust loose and they'll come right out. This works better than just heating them because if you heat them too much and put a wrench on them you may break them or round them off since the heat will soften the metal.

12-10-2004, 01:05 AM	#4
z3beemer Registered Member Join Date: Apr 2001 Location: Valparaiso, IN USA Posts: 56	Re: Seriously rusted plugs Sometimes it better to heat them up, then quench them quickly with water. Do this a few times, them blow all the water away from around the plugs with compressed air or shop vac. The expansion and contraction from heating and cooling will break the rust loose and they'll come right out. This works better than just heating them because if you heat them too much and put a wrench on them you may break them or round them off since the heat will soften the metal.