I flushed my system, but the orifice tube keeps getting clogged and stopped up with debris… Whats happening?
This typically happens after there’s been a catastrophic compressor failure. After installing the replacement compressor the A/C system performs perfectly for about 20 minutes. Then the pressures drop and the cooling stops and you realize you have another problem. After recovering the refrigerant, you remove the orifice tube to find that it’s plugged again! What’s wrong? The problem is that all the debris and contamination has not been removed. In most cases, the problem occurs because the A/C system wasn’t flushed properly. In so many cases, because proper procedures were not followed, debris and contamination is left in the A/C system and continues to cause problems. Flushing involves cleaning the entire system to remove debris and contamination. The proper process to flush and A/C system varies from car to car because of the specific system design. As an example, on A/C systems that include muffler assemblies (between the compressor and the condenser) those mufflers must be removed.
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