Question about Briggs & Stratton Prosumer 20324 Gas Pressure Washer
The piston in the lance trigger may be stuck . This will cause the flow to be blocked...try another lance trigger mechanism
Posted on Apr 23, 2009
There are many reasons why there is no pressure. The simplest one is try a new lance. The lance you say it is not blocked, but it could have a wider hole with wear and tear.
The second most possible reason is, faulty valves. The suction valves are the most that give low pressure when they are faulty. To check the suction valves, put on the machine in the normal way and as it is working, disconnect the water supply. Than check if air or water is blowing out from the inlet. This is not 100% but you can have a picture of the function of the suction valves.
On the other hand if you do this exercise with the outlet, after removing the gun, you can check for the delivery valves. If you feel suction at the outlet, than the delivery valves can be faulty.
If all is correct, than there must be a fault in the swash plate. This could become loose and so the pistons will stop moving. Also another fault could be broken springs.
Also if the machine is leaking, the high pressure and low pressure seals are damaged. This also lowers pressure.
Other faults are related to the famous spill valve. Also faults could be to internal water leakages, due to corrosion in heads. Finaly I like to add that a faulty electric motor, could also not deliver enough rotation and power, and this also reduces pressure. This could be rewinded or changed for a new one.
Posted on Nov 05, 2008
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