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I have a 2007 Ford V6 Mustang that has a stuck high-side A/C Schrader valve.

The system is evacuated and without pressure but the schrader valve will not turn. I've ruined two tools because the little arms just twist off. Even putting the tips of needle nosed pliers down there and turning just doesn't budge it.

Is that normal? I'm pretty sure this valve is leaking because the leak detector beeps when it's near it and there is leak detector dye down in the well where this valve is. So I don't think penetrating oil is going to help anything.

Do I have to replace the hose assembly that contains the valve to do it?

  • Are you turning the valve clockwise? Some of them are left hand thread and not right hand thread like on tire valve stems. – Ben Aug 3 '17 at 21:40
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It sounds to me like you need a better Schrader valve core removal tool. It's going to cost a few more denaro, but will take out the core without shearing off the little nibs. If they are built right, the metal will withstand the torque and the outside of the valve (the brass part you thread the core into) will help support it. This really should be a non-issue with a good tool. Spend the money and Get 'er Done!

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