Having problems with your Karcher 2500 PSI Pressure Washer ?

It starts but it shuts off immedially. - Karcher 2500 PSI Pressure Washer


Answers :

Here is the long answer with everything we learned while using a power \015\012washer twice a day for years::\015\012

It sounds like could be one of the problems listed below or a \015\012combination of those things.\015\012\015\012
1) The exhaust is partially blocked. Check the screen covering exhaust \015\012port for carbon and dirt build-up. High-speed exhaust air must pass \015\012freely. We finally broke the exhaust screen out with a screwdriver to \015\012get our machine going one day.\015\012\015\012
2) Gas is not flowing freely to carburetor > under gas tank, find the\015\012 rubber hose connected to carburetor. Pull off rubber hose and make sure\015\012 gas flows freely. You can use this hose to drain gas tank of old gas \015\012... and then put in fresh gas.\015\012\015\012
3) Carburetor is partially gummed up and engine cuts off when gas flow \015\012slows down. Buy some gum out, and then don't store power washer with \015\012gasoline in the tank. Or put additive in gas when storing machine.\015\012\015\012
4) The choke is letting in too much gas or not enough gas. Try different\015\012 adjustments. The choke-lever on our power washer got so bad that we \015\012could not set throttle at full open or the machine would die. We still \015\012use the machine at 2/3 throttle, and then start it each time using WD-40\015\012 as described below.\015\012
\015\0125) Dirty air filter that won't let engine breath enough air to keep up \015\012with combustion. Take off air filter and see if problem persists.\015\012\015\012
6) The spark coil is going bad?? Change spark plug to see if problem \015\012persists. Is spark plug wire pushed all the way onto the spark plug?\015\012\015\012

Now the nitty gritty: we're gonna start that thing right now
7) Take off air filter. Spray WD-40 directly into carburetor. Yes, we \015\012use WD-40 every time to start my power washer, and we use the washer \015\012twice a week.
Spray in the WD-40, Pull the engine cord. The engine will \015\012fire on WD-40. Guaranteed.\015\012\015\012
Once it starts, keep spraying WD-40 directly into carburetor to keep \015\012engine going.\015\012
\015\012If engine will not fire and keep going on WD-40, then your spark is \015\012suspect.\015\012
If your engine fires and runs on WD-40 but dies without it, then your \015\012gas supply or carburetor are suspect\015\012\015\012
8) Carburetor problem >>> try Gum out >>> and then \015\012take machine to small engine repair shop\015\012\015\012
9) Spark ... take out spark plug. Put spark wire back on. Hold spark \015\012plug by spark wire. Touch metal threads of spark plug to metal opening \015\012where plug came out. Metal to metal. Pull back start cord and look for \015\012spark between the metal.
If you have no spark, then spark coil is bad \015\012>>> take machine to small engine repair shop

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