you should have a 55 to 60 degree temp at the outlet firthest from the evaporator core. with a 134a conversion from the old r12, you need to replace the compressor oil with esther oil. also, what ever the r12 capacity of the system was, you use about 80 % of the 134a. evac the system and pull a vaccuum on it for about 45 minutes to an hour to remove any moisture from the system. hold the vacuum on the system for at least half an hour and look for a vaccuum drop. if so there is a leak. there is a u/v dye kit, napa has em along with a small u/v light and a pair of yellow glasses. charge the system with 134 and add the dye. run the system for about an hour or so , the shut it off and use the glasses an the u/v light to locate the leak. check all hoses, fitting, compressor seals and a/c condenser.
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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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