SOURCE: karcher pressure washer leaking oil
all 4 stroke engines have oil, and 2 stroke can have a oil mixer reservoir to mix with engine gas or to lube the chains , gears, pumps.
If yours is 4 stroke as likely then the oil may be leaking at the seals to the main. (bad news)
Pressure wash it (lol) and locate the leak,
to speed up the leak you can pump some compressed air into the engine (be creative)
SOURCE: trouble with Karcher Pressure washer
Dear Pgarciax,
It is important that you must have mentioned the model number of your Karcher. Just the same I can surely say that your machine's fault lies in the "SPILL VALVE"
When the gun is open and pressure is being produced, the spill valve is in a relaxed position. Also it has at the bottom a valve, which when pressure is produced it is closed. If this does not close due to dirt or corrosion, the pessure goes down. Now when you close the gun,pressure forces the spill valve down to close the electrical system. Now if the "o" rings of the spill valve are damaged, the machine will start going on and off while in stand-by. So if you know how to locate the Spill Valve, all one has to do is change it with a new one.
In some Karcher machines there are 2 spill valves. One regulates pressure and the other one is for switching off the machine when the gun is closed.
Low pressure could also be due to faulty suction or delivery valves. Most probably the suction valves.
But when saying that there are short interruptions while in stand by, I stick to the fact that the spill valve needs renewing.
Regards,
MG.
SOURCE: Karcher pressure washer 411A. loss of pressure...
411a when i turn on it gos for 1 min then i have too press it on and off 3or 4 times befor it works and it only stays on for 1 min.
SOURCE: My 2200 Gc Karcher pressure washer oil got mixed
If you are talking about the oil in the pump then it should be 10W30 but must be NON DETERGENT. Remember the reservoir should only be 1/3 full
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