Why wouldn't a pressure washer be putting out any pressure?

pressure washer information image

Arch Bisho

I've had this pressure washer for 2 years, I just sold it and the guy says 'the pump cut out and won't come back on'. Its a 13hp Honda engine, on a 3600 psi 4gpm pump. What would cause a loss of pressure? If the pump seized, would the engine still run?
Its hooked up to a house spiket, I think it flows 6-8 gpm.

Answer
You didnt give much information as to what brand pump is mounted to the honda engine. But to venture an educated guess I would say Cam is right. The unloader valve is stuck in the unload mode. It could also be the "Easy-Start Spring" has broken and is locked in the start mode. (low pressure mode for easy starting of large horse power engines)

i have a mobile detailing service, my pressure washer locked up and i let it sit for a couple of days and trie

mr.emosk8t

i have a mobile detailing service, my pressure washer locked up and i let it sit for a couple of days and tried to start it again now its turning over but wont start can you help me?

Answer
When a machine locks-up it is never a good thing. However we will do our best to get you going again!
There is some information we must have for a fair diagnosis.
Does it have oil, did it run out of oil before it locked-up?
Is there fresh gas in the tank?
Is the air filter clean?
Did the unit turn over?
Is there resistance when you pull the rope?
Is there spark to the spark plug?
With the answer to these questions a diagnosis can be more readily prepared for you.

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