Lightning Gene 66 Report post Posted March 31, 2007 Just bought a second hand 4000 psi 4gpm cold water machine.Starts and runs fine has good pressure but upon release of the trigger no water coming from bypass hose back to water tank....Could the unloader be bad or need adjusting? Share this post Link to post Share on other sites
0 Adrian 155 Report post Posted March 31, 2007 Could be the unloader. Did you leave the trigger alone long enough to actually engage the bypass? If it is the unloader then it is a relatively quick and inexpensive fix. See if it will actually dump into the tank after running for a minute or so without depressing the trigger. Share this post Link to post Share on other sites
0 Lightning Gene 66 Report post Posted April 1, 2007 How long can I run pump to ck unloader without causing damage or heat up the belts? Share this post Link to post Share on other sites
0 One Tough Pressure 580 Report post Posted April 1, 2007 The water has to go somewhere. If the unit runs fine and you can release the trigger without bogging or stalling the engine, then it may be internal bypass back to the pump. That is a very common way for machines to run. Where does the hose that you have running to the tank come from? What kind of machine and unloader? Share this post Link to post Share on other sites
0 Lightning Gene 66 Report post Posted April 9, 2007 Sorry to take so long getting back to this thread but I was updating to new server....Took and hooked up washer and hit the unloader slightly with hammer and must have dislodged trash or something in the valve and it works perfect ever since...Thx for all the help. Share this post Link to post Share on other sites
0 Paul Kassander 26 Report post Posted April 10, 2007 When all else fails GET A BIGGER HAMMER. Share this post Link to post Share on other sites
0 Freshlook 14 Report post Posted April 11, 2007 Ok.. let's go over the necessary equipment for PW'ing Chem's - Check Water Supply - Check Pressure Washer - Check BIG A-- Hammer to fix PW - Check! was it 18 or 20 oz? Share this post Link to post Share on other sites
Just bought a second hand 4000 psi 4gpm cold water machine.Starts and runs fine has good pressure but upon release of the trigger no water coming from bypass hose back to water tank....Could the unloader be bad or need adjusting?
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