Hello The best way to know if there is a pressure problem is to get a baseline when the PW is new. Most PW gauges are quick disconnect so 2 adapters are needed to connect the Guage to the spray gun. I purchased the Lowe’s pressure washer adapter kit to make all the connections a quickie. Then I purchased the PW Guage https://www.amazon.com/gp/aw/d/B07T6FXRDY?psc=1&ref=ppx_pop_mob_b_asin_title The PW is a HF 3100 PSI unit 3100 PSI, 2.8 GPM, 6.5 HP (212cc) Pressure Washer EPA III While it is new I established a baseline using the Guage. After starting the PW, with the trigger pulled and the gun spraying the pressure reads 2700 PSI it reads 3,000 PSI if the trigger is released momentarily. Some manuals say always have the water on and do not release the trigger longer than 2 mins. Even though it puts the pump into bypass mode that longer than 2 mins not spraying is still bad for the pump. Also there is a release valve that goes if the water temp reaches 130 degrees. If this valve start leaking water the unit should be shut right down and cooled off. Then the release valve must be replaced. Pic 1-2 > Quick connect adapter kit Pic 3-4 > Pressure Washer Guage 0 - 5000 PSI Pic 5 - 2,700 Water pressure when spraying and working properly. New Baseline Anyone having pressure issues? Could be plugged wand or nozzle. Bad spring in unloaded or bad water pump.
Hello Also it is good to have a baseline on operating temperature since the pressure washer does have a pressure release valve when it gets too hot. According to the manual the one time pressure release valve blows at 130 degrees. This does not auto reset it indicates that when it blows and water comes out that the unit is over temperature and should be shut down immediately by you! No auto savior feature here and then this valve must be replaced before running the machine again! As you can see the front section on the pump that contains the pump bypass and/or the unloaded valve is approx 104 degrees. If this section hits 130 degrees then the pressure release will blow. Not running water into this section or just releasing the trigger for more than 2 minutes while the engine is running will cause that to blow! The large cylinder section attached directly to the gas engine measures approx 144 degrees F. Now it is time for deck buster!
