I'll add a couple of things to look into. First, your pressures are WAY OFF. You do not need to go up to over 300 on the high side under ANY circumstances. Low side should run around 25 to 50. Compressor should cycle off at around 22 to 24, high side should run around 300 to 250 depending on ambient temperature. On a cooler day, it may run as low as 175. I suspect due to the poor cooling, you have either air in the system or too much oil in the system. I suggest that you have the system recovered and evacuated. This will pull most of the oil out of it. With dye in the system, you should also look it over with a black light in an indoor environment where the ambient light is well below daylight level. A leak will show up quite obviously. There is more to an A/C system than just having the pressures right.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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