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Started By
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pressure washer blowing water hoses?
Posted on 7/20/14 at 11:50 am
Posted on 7/20/14 at 11:50 am
I borrowed a little Honda pressure washer from a coworker, it has a GCV160 engine on it. It's not anything high-end, I think it's 2400 psi.
I was running the pressure washer for a little while, put it down to climb up a ladder for a minute, and the end of the hose separated from the threaded end.
I didn't think much of it, since it was an old hose. So yesterday I went to Lowe's and picked up a 75' rubber heavy duty hose, it says it's rated for 400psi.
Again, I put the gun down for a couple of minutes and this time it blew out the hose, near the threaded end.
What the frick? Should there be back pressure on that side of the pump? Am I not supposed to leave the pressure washer running even for a couple minutes without spraying?
Educate me.
I was running the pressure washer for a little while, put it down to climb up a ladder for a minute, and the end of the hose separated from the threaded end.
I didn't think much of it, since it was an old hose. So yesterday I went to Lowe's and picked up a 75' rubber heavy duty hose, it says it's rated for 400psi.
Again, I put the gun down for a couple of minutes and this time it blew out the hose, near the threaded end.
What the frick? Should there be back pressure on that side of the pump? Am I not supposed to leave the pressure washer running even for a couple minutes without spraying?
Educate me.
8
Posted on 7/20/14 at 11:52 am to Casty McBoozer
(no message)
This post was edited on 11/17/21 at 9:16 am
Posted on 7/20/14 at 11:53 am to Casty McBoozer
strange...even if the pressure washer were malfunctioning, there is no way you could be pressurizing up the whole water system to the point of bursting water hoses...
I'll have to think about this a little more...
I'll have to think about this a little more...
Posted on 7/20/14 at 11:54 am to puse01
quote:
You bought a 400 psi hose to use on a 2400 psi system?
No. Not the hose leading to the gun. I'm using the hose that came with the pressure washer for that. I'm talking about the water hose supplying water to the pressure washer.
Posted on 7/20/14 at 11:54 am to Casty McBoozer
(no message)
This post was edited on 7/20/14 at 11:57 am
Posted on 7/20/14 at 11:55 am to Spankum
quote:
strange...even if the pressure washer were malfunctioning, there is no way you could be pressurizing up the whole water system to the point of bursting water hoses...
I'll have to think about this a little more...
Heat maybe? Both blow-outs were right near the pressure washer. It didn't seem overly hot though.
Posted on 7/20/14 at 11:57 am to Casty McBoozer
Is the engine idling down at all when you stop washing?
Posted on 7/20/14 at 11:58 am to High C
quote:
Is the engine idling down at all when you stop washing?
Sounds about the same, maybe a hair.
Posted on 7/20/14 at 11:58 am to Casty McBoozer
Did you put a bind on the supply hose by pulling on the unit with the wand? That could cut the supply hose by the fitting
Posted on 7/20/14 at 11:58 am to Casty McBoozer
quote:
Heat maybe? Both blow-outs were right near the pressure washer. It didn't seem overly hot though.
maybe you are getting some kind of wierd harmonics going on due to the vibration of the motor coupled with the pulsation from the pump...
Posted on 7/20/14 at 11:58 am to Casty McBoozer
Makes no sense
Posted on 7/20/14 at 12:01 pm to Casty McBoozer
maybe pump bypass is malfunctioning
Posted on 7/20/14 at 12:10 pm to supatigah
quote:
Did you put a bind on the supply hose by pulling on the unit with the wand? That could cut the supply hose by the fitting
No, it was curled up on the ground.
Posted on 7/20/14 at 12:10 pm to bencoleman
quote:
Makes no sense
That's what I thought, but that just happened.
Posted on 7/20/14 at 12:13 pm to Casty McBoozer
Read the title as
quote:
pressure washer blowing water on horses?
This post was edited on 7/20/14 at 12:14 pm
Posted on 7/20/14 at 12:17 pm to Henry Jones Jr
Maybe I'll get more responses if I change the topic from "water hoses" to "hose pipes"
Posted on 7/20/14 at 12:18 pm to LSU1NSEC
maybe pump bypass is malfunctioning"
agreed
agreed
Posted on 7/20/14 at 12:21 pm to windmill
quote:
maybe pump bypass is malfunctioning"
agreed
So I'd have to bring it somewhere for repair? Or the unit is toast?
Posted on 7/20/14 at 12:24 pm to Casty McBoozer
quote:
So I'd have to bring it somewhere for repair? Or the unit is toast?
that's a tricky question
you can buy the pump units and swap them out but I honestly don't know what the cost/benefit of it would be. PW's usually only last me about 2 years - got one sitting in the shop right now with problems
eta: u might check youtube videos for anyone who had similar problems - might find a way to fix it without having to remove the pump or buy a new one
This post was edited on 7/20/14 at 12:27 pm
Posted on 7/20/14 at 12:27 pm to Casty McBoozer
They will build up back pressure if the unloader does not work properly and release the excess pressure when you leave the gun closed for a period of time.
You can get a good rubber hose from Sears with a lifetime warranty. If it blows take it back and get another one. Then read this link to troubleshoot and learn more than you ever wanted to know about an unloader valve.
LINK
You can get a good rubber hose from Sears with a lifetime warranty. If it blows take it back and get another one. Then read this link to troubleshoot and learn more than you ever wanted to know about an unloader valve.
LINK
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