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Re: High pressure hose connection blew up. Fix? or buy...
Yes take it to napa auto parts and they can cut and attach a new end which are for hydraulics. They are crimped on and meant to hold very very high pressure. I used to use a pressure washer everyday for a living and it was a tractor rental/repair shop and we used the hydraulic fitting machine on the power washer hose all the time so rest assured.
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If you are replacing the hose because it burst you might contact the manufacturer. Mine, of a different brand, burst and they sent me a new pressure washer saying that it was very difficult to install a new hose. They had a lot of problems with hoses from China.
For the Campbell Hausfeld 1800 PSI model (PW182500AV), the garden hose connects to the pump inlet on the lower back of the pressure washer. The high pressure hose connects to the high pressure outlet on the lower front of the pressure washer. Here is the operator's manual that will show both connections. http://www.mowersatjacks.com/images/campbell-hausfeld/manuals/pw1825.pdf
Either the pressure tip or wand are blocked or the valve in the trigger is broken. Remove the high pressure tip and either try another tip or pull the trigger without a tip on the wand to see if you have the same problem. If available, try another pressure gun on the hose.
You can use a universal hose for replacement. This hose should not be under high pressure (usually inlet water hose pressure). This is a bypass that is used when you release the trigger to wand. Look closely at the brass fittings of the hose, sometimes they can be reused by removing the clamp and cutting off the rubber part. Use automotive rubber hose (suitable for hot water system/radiator )or black pressure hose from Lowes (sold bulk) that will fit snugly on the barb and use simple clamps. You can make new hose by buying barbs and hose from Lowes or hardware/plumbing store. Good luck
try easy solution first: make sure that your mains is fully open, that tap on whihc hose is hook up is fully open and hose is of "decent" diameter to allow sufficient flow.
if above solution do not work then you need to make another, more difficult arrangement: prepare 20litres pressure tank with inlet connected to mains and outlet by short hose to power washer, fill it with water from mains, keep it under mains pressure and use karcher power washer normaly. this will solve water supply problem. twenty litres will last about 2min, because it is re-filled, under standard pressure therefore it will last about 3min...
third possibility is to stop washing...
if you find my advice helpfull, please do not hesitate to left the comment and vote for me, thanx!
What you should do next is stop using an extension lead. As you've already discovered, there's a risk of the connection getting wet, which is potentially very dangerous, but this is probably not the main problem. Most extension leads (the normal domestic type) are simply not capable of carrying the current needed to run your pressure washer.
Rather than using an electrical extension, use an extension high-pressure hose and work further away from the machine (which also makes it easier to keep the machine dry).
If this doesn't sort the problem, please post here again and we'll try something else. Good luck!