Just an update. I took the pump apart and cleaned it good. Found the ball was missing from the soap inlet valve (but the spring was still there WTF). Replaced the valve and the temp relief valve (just in case). Replaced the spray wand too. It seems to be working now but then it just shut off while I was spraying and now it won't stay on for more than a few seconds what gives?
It's got fresh gas (I ran it dry last time I used it). My neighbor was over when I was testing, he said it sounds like it's starved for fuel - carb float might be stuck or something. These damn carbs are killing me...
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