Im hoping someone here might be able to point me in the right direction.
Last year i was working cleaning up the engine bay on a 2002 silverado 5.3L.
I uncapped both the HP anbd low pressure ports (just the plastic caps) to clean them ... and noticed 2 things .. one leading the the next.
1st it sounded like a very small leak when i removed the cap (small pop on removal) on the forward unit (high pressure i think) and unlike any other AC i remember instead of a valve within .. it looked like small sealed hole.
After toying with the cap .. the only time it leaked was with the plastic cap off .. little soap and water to be sure on how small the leak was .. and if it was leaking with the cap on.
Now a year later while the wife was driving it looks like it blew the cap off and and seems to have dropped most of the oil and refrigirant (guessing).
It still has some pressure on the line .. small hiss .. but it definately blew the cap completely off and vented a LOT.
Whats the recommended way to check .. and replace it. (or even just the AC level). Manifold gauges wont attach to it that way
If it doesnt have a schrader valve to seal that port... why have it there at all? unless there something special im missing .. and if it did leak and blow out the seal that was there .. guessing the entire line needs replaced
Well i stand corrected.. i appears to actually be a valve but not a replaceable schrader type .. so if that seal if kaput ... then entire unit line had to be replaced... or so it appears at this point