86 w/a 350. Converted to R134a years ago. Been charged and working since then. Had a small leak recently. Usually I can charge it this time a year and only have to add a can or so through out the summer. Went to pull a vac on it, but wouldn't take the freon. Here's what I've done:
- Borrowed mastercool pump (1.5 CFM Single stage) and manifold set from AZ
- Hooked up according to instructions(blue to low, red to high, yellow to pump)
- Turned on pump
- Opened low side
- Opened high side
- Let it pull to 29hg then let it run for another 30 mins
- Closed off valves
- Set for 10 mins to check vacuum (it held)
- Hooked up freon to yellow hose
- Opened low side (needle didn't move)
- ?????
That's when nothing happpened. No compressor engagement, no can turning cold, no sucking of the freon.
Don't know if it's the pump or not, but seems like when it was pulling you could here it, but when it got to 29, it just kinda sat there, running, but didn't seem like it was still pulling. Took the hoses off to feel the pressure, and it didn't seem like it was sucking that much. When I pushed on the schrader valve to check it, it just kinda did a "slight breeze" vs. a hiss.
Am I missing a step?
- Borrowed mastercool pump (1.5 CFM Single stage) and manifold set from AZ
- Hooked up according to instructions(blue to low, red to high, yellow to pump)
- Turned on pump
- Opened low side
- Opened high side
- Let it pull to 29hg then let it run for another 30 mins
- Closed off valves
- Set for 10 mins to check vacuum (it held)
- Hooked up freon to yellow hose
- Opened low side (needle didn't move)
- ?????
That's when nothing happpened. No compressor engagement, no can turning cold, no sucking of the freon.
Don't know if it's the pump or not, but seems like when it was pulling you could here it, but when it got to 29, it just kinda sat there, running, but didn't seem like it was still pulling. Took the hoses off to feel the pressure, and it didn't seem like it was sucking that much. When I pushed on the schrader valve to check it, it just kinda did a "slight breeze" vs. a hiss.
Am I missing a step?