20 Most Recent Karcher 2500 PSI Pressure Washer - Page 7 Questions & Answers

I have a 5hp honda power washer sat for 2 years it will only run if I spray gas in the carb as soon as I stop spraying the engine stops I have took off carb and cleaned it

what model of pressure washer? is it sucking out of a barrel or is it on mains water pressure.?
do you have detergent on this machine?

a bit more info will help a lot.

bit like ringing the garage and saying my car wont start, what do you think it is?

You need to remove the pump and sit it brass side up before removing the bolts holding the brass to the aluminum part (you have to do it that way so the oil doesn't spill out.) CAUTION: there is some spring tension on the brass head.

Take the brass head off and set to the side on a rag or in a bucket. Dump out whatever oil is in the oil side, making sure not to drop the swash plate or bearing (the pieces sitting in the oil). Fill the oil end with aproximatly 4.5 ounces of Karcher pump oil, (or just 20w 50 weight non-detergent oil). Put the brass head back on and tighten bolts. Put the pump back on the machine.

If this helps please rate.


Bill

sounds like vapor lock

Take the spark plug out and then try to turn it over. If it still won't pull, it's probably locked up. If it got tipped forward or towards the spark plug oil may have went into the valves. If it pulls you may see some oil spray out. Clean off plug and try to wait for the smoke to clear. Hope this helps. Please rate me

The bypass valve is sticking.

Unless your unit is equipped with an easy start feature...and I think these are not, it is not usual to have to pull the trigger on the water gun to start one of these units. Also...if there is any chance that the washer has tipped over, there is a possibility that oil has gotten into the engine cylinder. Oil will not compress and the rope cannot be pulled..at all. Remove the spark plug and step back away from the exposed hole. Pull the recoil handle and watch for spraying oil from the spark plug hole. Pull a few more times, clean up the plug and the unit may start. If not, you may have to remove the carb bowl and drain more oil. Check your oil fill level. If your gas level is suddenly low you may have gas in the oil crankcase and need to change your oil. When the washer starts it may blow smoke for some time before it clears up.

Sounds like debris in the carburettor. The carbs on these are relatively simple things which come apart easily. Check for debris or water in the float-bowl, and ensure both your idle and main jets are clear and you can see daylight through them.

The pump that connects to the motor could be bad/and or loose