My accord has been converted to 134A Air wont blow cold, would it bee anything other then a leak and if not has anyone used that maxi-seal or similar product to stop any leaks? and how long does that stuff work, under the hood the car says it has a leak detector detergent in the system some green dye?, where should I look for leaks? I would rather try other things before taking it to a a/c shop and getting a new compressor or other costly items, please help.