Power washer advice needed please

[flatyre]

Hey folks I have a small Honda 4 stroke ohv engined power washer which is meant to produce 2500psi. I didn't buy it new but it looks like its had very little use. The engine and pump are in very good condition with no leaks, but there is very little pressure. I can hold my hand over the lance nozzle when on full power which I don't think I should be able to do as 2500psi should strip my skin off. It has a plastic K'archer lance and hose with one of those orbiting turbo lance ends. The hose is also plastic and has quite a small internal diameter. Could the lance and hose be the problem? Thanks

[Cheesy pete]

ok some simple stuff have you got the engine revving at the top ? is the pressure the same when you turn the engine off and you just press the trigger ? sounds like the pump to me though ! it could be the lance best way to test it is with another hose first and then another lance

[cornish wood burner]

Relief valve stuck open or seal broken up perhaps.

Have you a reasonable flow but with little pressure?

There should be a filter in the system somewhere so worth checking.

[twistedhicap]

Relief valve stuck open or seal broken up perhaps.

Have you a reasonable flow but with little pressure?

There should be a filter in the system somewhere so worth checking.

 

 

Yup my guess would be that the unloader valve is either stuck open or wound right open there should be a plastic handle that you screw in for higher pressure and out for less

[david wood]

for all the cost i would send the pump to somebody who does these, get tested and go from there.

 

how does the engine run? does it sound like its running good?

 

i also have a honda engine powered pressure washer, its got bags of pressure but its a good hose and lance from pressure washer company.

 

pump fault would be a likely suspect

[flatyre]

engine sounds good, but think i'll leave it in to someone who knows more about them than me.

[Gareth Dalzell]

Try Michael Stewart Pressure washers in Lisburn - they're very good and carry all the service parts and seals etc. Or Coates Engineering - a bit closer for you.

 

Michael Stewart Pressure Washers Northern Ireland Home

[miker]

dont forget the obvious ! good water supply ?maybe pump is too fast for water flow ?

just a thought

[gensetsteve]

The small diameter of the hose could be causing the pressure relief valve to dump. If it's been doing this for a while it may have damaged the valve. Also if it's a rotory lance for a bigger machine the jet will be too big. Or it could be a combo of all above

[harrythecat178]

Are you 100% sure its a Honda or is it a generic chinese one. These work well but need loads of water , pressure fed to it. If you know you have plenty of water and it is a chinese, then change the pump is the best bet, about £60 and 20 mins job