Air Pump Head Injectors Rusted-- Help

[Bravo]

I am trying to remove the head injectors from the air pump on my 3.0L but they are seriously rusted in place. I have tried all the sprays. Should I try heat. It does'nt look like I can get heat to the left sided ones. What if one breaks? What if one strips? Can I just cut the tube near the muffler and cap or plug the line until I pull the motor? thanks

[tsuter]

Yes, You can just cut the tube after the check valve and weld it closed. Then when you have better access unscrew the tubing assembly from the injectors first. That requires a 14mm backup wrench on the air injector to keep it from turning. Carbon build up on those air injector threads make them difficult to remove from the heads. I would spray with wd-40 and allow to penetrate as breaking the tubes off at the threads would not be cool as you have surmised. They absolutely will brake off at the threads if forced.

[RoninLB]

Originally posted by tsuter
They absolutely will brake off at the threads if forced.

I didn't respond already because I never-seized mine at the rebuild.. so they came out easy 40k miles later. The tubes are frail, and I guess the soft steel threads could be kinda welded to the head. I've seen the tubes snipped and crushed with a pliers.
It's an executive decision on how to deal with it now.
good luck.....Ron