I have a 92 Celica... How do you remove the tubes that are extending from the head.. I think there called spark plug tubes.. not sure though. I have my valve cover off and oil leaks inside these tubes, but not from the top, from the bottom... do they unscrew..? If so, how would you unscrew them with out putting dents or scuffs on them?.

ummm leaks from the bottem probably means blown head gasket, for that ud take the whole head off not just the valve covers, and no those tubes dont come out there welded in

Oh that sucks...

ummm leaks from the bottem probably means blown head gasket, for that ud take the whole head off not just the valve covers, and no those tubes dont come out there welded in
The tubes are removable. They unscrew and there is a rubber washer that fits around the thread of the tube

the tubes arent removabel on a 4afe unless you pull the head off, they slide out the bottem of the head on my motor, soulda clarified that