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Cat pump

kwikwash

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coleman self serve 5cp2120 pump running high over 2k but when i pull trigger gun drop back down to 1400psi. Any idea what causing this? Thanks. Im glad i found this website. new at this
 

MEP001

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Regulator is set too high or is bad. If it's a Paraplate and you can see rust weeping from the holes in the body, it's been bad for months.
 
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