Question about Karcher 2500 PSI Pressure Washer
The machine has gas, and oil and a new spark plug. There are sparks coming from the plug, but no matter what we do the machine will not start. We have tried everything. Can you help
Brand new and won't start
Posted on Jan 26, 2008
I had the identical problem and tried this suggestion but it did not work. I took off the fuel bowl and sprayed all the part I could get to with a carburetor/choke cleaner. Unfortunately that did not work either so I removed the linkages and removed the carburetor. The key part that was clogged was the fuel jet. The bolt that holds the fuel bowl to the carburetor actually screws into bottom of the jet. I totally overlooked this earlier. I sprayed cleaner into this part and then blew it with compressed air. I reassembled the carburetor and tried to start. It caught on the first try. So far so good. I think looking back that all I really had to do was to take off the bowl and spray the jet. A lot simpler than taking it apart.....The real Dr J
Posted on Dec 07, 2007
Hi, This problem is common if you have not used the engine for some time or you ran out of gas while the engine was running. Should you like to venture this a try, you have to remove the air cleaner cover & remove the air filter element and temporarily replace it with a clean rug big enough to cover the entire air box. It should cover fully and snuggly the air intake of the carburetor. With the engine off and sparkplug remove, crank the engine several times. The idea is to manually choke the carbs (partial/controlled flooding), prime the carbs (if your engine is using a vacuum controlled fuel/pet cock/valve which of course must be turned on it it was manual). To verify that fuel is getting inside the combustion chamber, you have to stick your index finger to cover the sparkplug hole while cranking. This will cause popping out (because of compression) of your finger. Presence of fuel in your finger would be a good sign. Let it rest for a while then remove the rug, reinstall the air filter + cover & plug. Start your engine. As a safety precaution, when working, no open flames, make sure engine is off when doing the finger test. Based on your post "sparks coming from the plug" I will assume that your mechanically inclined since you were able to perform this test and therefore familiar with the use of tools and safe practice. Good luck and pls post again how things turn up. Kind regards.
Posted on Aug 11, 2007
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