Need help on this one please. I bought this back early 2011 and has worked flawless until today. The problem is when I have my hand off the trigger, the engine is loaded down. After a while hot water streams out of the bottom. If I pull the trigger then it seems like it should while spraying. I took the unloader valve out and cleaned and lubed it and made no difference. I then backed it out to the max and it still would load the engine down. I'm trying to figure out if the valve is the issue or something else. A new pump is like $170 and a new valve is $80.
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