Any
water leak from the pump or pressure hose and fittings will cause pressure
drop. Pressure is produced at the nozzle. It's the amount of water
being pushed through that hole which creates pressure. Less water = less
pressure. Check to make sure you are not losing water from anywhere
downstream of the pump.
Quick
connectors are notorious for leaking water. Check them and regularly
and replace the o-ring if leaking. Click
here for selection of replacement connectors and o-rings.
If your pump is leaking water from
underneath, between the head and crankcase, you likely will need to replace
the plunger seals. These come in a kit with the various seals and
o-rings that make up a packing
kit.
See
the discussion on broken or worn plungers as
well. Tell-tale signs of worn seals or broken pistons is water in your
crankcase oil. Check the oil for a milky color. See
additional discussion on water in oil.
SOME OF THESE OPERATIONS CAN BE
EXTREMELY DANGEROUS. IF YOU DO NOT HAVE SUFFICIENT TRAINING IN THESE PROCEDURES, WE RECOMMEND YOU
SEEK ASSISTANCE FROM A QUALIFIED
TECHNICIAN
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