Adjust water pump pressure

any wands will work

Usually, there are spaces between the pump and head portion of the pump. This space is not sealed and will allow water leaking past the seals to come out. There may be a seal kit available, however I have had better luck just changing out the whole pump. There are many available on ebay. Search for one that will use same mount and hoses. Once the seals are gone, the pump will never be the same (may nickle and dime you the death).

bad pump..take it back where ya bought it or call coleman for service


Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

Sounds like the valve in the handle is sticking closed. May have a broken spring, or maybe a part is stuck..
I say take it apart, and the answer will present itself.. Play with it with nozzle out too... Maybe something is stuck after storing so long and will loosen up.. Fingers crossed

The valve that limits the water inflow when output pressure is up is stuck open.

Probably needs new O-Rings.

Make sure your fluid level in the pump is changed and at the right level.

if the water is flowing
the valves need to change
if no water pistons in pump need to change.

It sounds like the bypass valve is stuck. Do you have a parts diagram?

Did you try a new spark plug. Old one may have fouled.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

your pressure relief valve is stuck open. i know that may sound too simple but it depends on if you use a cleaner with the water when your using it , not flushing with clean water after use can cause the housing of the aluminum housing of the relief valve to corrode. the valve can't move back and forth as it should because the o ring won't slide.