Question about Karcher 2500 PSI Pressure Washer
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.
Posted on Oct 10, 2012
You need to remove the carb bowl, then with a small flat screwdriver remove the jet. ( on the side, at the bottom of stem.) take a small wire or toothpick and clean the gunk out of the jet, reassemble and open fuel valve, start, and pat yourself on your back.
Posted on Aug 04, 2009
First one must see if the problem is in the Honda engine or in the pump. So you must try the Honda with no load. You can remove the gun from the pump, but leave the water supply going into the pump. In this way you still have some cooling effect from the water. Now with no load you try the Honda engine. If it is possible tune and set the Honda engine to work correctly. Now if the Honda runs smoothly,...then the problem is in the pump. Regarding the pump try the system by attaching the gun with no NOZZLE/ or LANCE. Open and close the gun to see reaction of Honda Engine. If in this case the Honda runs OK....then attach a NOZZLE so that you have pressure and load. If the Honda starts to die down, this could be that the Honda needs servicing. This like having a car and uphill it will stall and dies down. Here the engine needs servicing. One small thing to look for. I came across Honda driven pumps which have a cable coming from the Honda's carbureter to the head of the pump. When the gun is released the cable is pulled from the head of the pump by means of a piston type valve and this in turn will reduce the speed of the Honda. As you see it is difficult for me to pinpoint the real cause when I do not know the model number and type of pump you have. But if you go by these guide lines you shuld find the fault. Remember...ALWAYS try HONDA ENGINE without load first. I also wish to add that the Honda could be working OK...but then the pump has some problem that it is stopping the Honda. So the pump could also for some reason be jammed and this needs the pump to be serviced. Another hint is very simple. If the Honda is not getting to its maximum power and revs...then the pump will drop pressure.
I gave you various hints to tackle the problem by simple elimination. But you must be able to know how to service the Honda or Pump yourself. To repeat and remind you...check the honda and service the Honda with NO LOAD!! Thyen tackle the PUMP.
Posted on May 24, 2009
pour a bottle of carburettor or fuel injector cleaner in the fuel tank, replace the spark plug and set the spark pluglug gap at 0.7mm. Replace the air filter element. Also change engine oil if necessary (mobil 10w30 synthetic.
Posted on Feb 03, 2009
Lets back up and regroup on the carb cleaning.
Before you start.... if you have a digital camera take "close up" PICTURES of the linkages and springs attaching to the carb. If this is your first time you will be so glad you did. You can always delete them later if you don't need them. :)
Here is what you need to do:
1. Fuel selector off
2. Remove float bowl mounting screws and nut
3. Remove the BRASS Jet / Orifice in the very bottom of the venturi tube inside the pickup tube. (Flat blade screwdriver) Hold the Orifice up to the light. You should see a pinhole. If it is not clear clean the orifice but do not force anything through the hole.
4. Underneath the Orifice there is yet another BRASS tube that you need to remove. (Flat blade screwdriver) Make sure all of the holes in the tube are clear. The tube will be over 2 inches long. Clean it and reinstall it.
5. Reinstall the Orifice.
6. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow.
If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF.
(The following procedure is to be done only if there is no fuel flow with fuel selector on.)
a. Remove the silver float pivot pin retaining screw
b. Drop the Float down (The needle will come off with the float. NOTE the position)
c. Inspect the tapered rubber of the needle If should be pointed. If it is not pointed then the rubber tip is stuck inside the seat.
d. Clean the seat hole ONLY if obstructed. (Easily damaged)
e. FUEL Selector on then off fuel should rapidly flow through the needle seat.
f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly and reinstall the silver retaining screw.
g. Fuel selector ON. Raise and lower float checking for free movement with fuel flow when lowered and stopped when the float is raised level.
NOTE if fuel does NOT stop when float is level you will need to bend the float tab (tab up if level is too high or tab down if level is too low) where the needle attaches to the float assy until it does.
7. If there still is no fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions.
FUEL FLOW IS GOOD
Step 8 is VERY important"
8. BEFORE you install the float bowl inspect the bowl nut. There are 2 holes in the side of the nut where it screws in to the bottom of the carb that must be clear.
9. Install Float bowl mounting screws and nut. Check for leaks.
10. Test engine.
That should do it.
Thanks for using FixYa.
Final note... if it does NOT start after this there are other problems we can discuss. i.e compression and spark "how to."
Posted on Apr 23, 2010
SOURCE: Karcher 2500 with Honda GVC160
Make sure the governor linkage is clean and works freely. A lot of times when you put a load on the machine, use it it stopps the fluttering.
Posted on Mar 19, 2011
Testimonial: "It is lopng pretty bad and will stop if let alone. This machine is about 2 years old and as I recal it started running rough in the middle of washing "
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