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PbFut · 05-19-2023, 11:17 AM

Follow up question:
Pulling vacuum yesterday yielded 30- a tick. I understand that is normal and correct. Closing valves and allowing the vacuum to sit with pump off over night was the plan. An hour later I return to find the gauge close to zero. The most common issue is obviously a leak somewhere. Which I will look for tomorrow. Another idea popped in my head. Yes I am overthinking as usual. I cleaned out the evaporator best I could but I wonder if there was residual cleaning fluid in the coils. That fluid would gas off under vacuum. Is that possible for it to do so enough to move the gauge that much?
What is the best procedure for tracking down leaks. Compressed air into system and use soapy fluid at the joints? Or is compressed air not recomended? I am reasonably confident the new compressor is good as it had pressure when I removed the temporary backer plate and installed the new flex lines.
I very much appreciate everyone's reply's.

05-19-2023, 11:17 AM	#6
PbFut Registered User Join Date: Feb 2022 Location: Ca Posts: 419	Re: Obsessing over my AC 134 conversion Follow up question: Pulling vacuum yesterday yielded 30- a tick. I understand that is normal and correct. Closing valves and allowing the vacuum to sit with pump off over night was the plan. An hour later I return to find the gauge close to zero. The most common issue is obviously a leak somewhere. Which I will look for tomorrow. Another idea popped in my head. Yes I am overthinking as usual. I cleaned out the evaporator best I could but I wonder if there was residual cleaning fluid in the coils. That fluid would gas off under vacuum. Is that possible for it to do so enough to move the gauge that much? What is the best procedure for tracking down leaks. Compressed air into system and use soapy fluid at the joints? Or is compressed air not recomended? I am reasonably confident the new compressor is good as it had pressure when I removed the temporary backer plate and installed the new flex lines. I very much appreciate everyone's reply's.