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Everybody had a crack at this problem, another thing would check is these engines sometimes have a primary fuel filter inside the tank itself. Drain the fuel and gently blow compressed air back through fuel line towards tank then rinse the tank out with fuel, refill and try run engine again
the problem is with the carb. not able to keep enough fuel going into the float bowl to support engine staying running. could be hose off gas tank clogged or petcock, coud be main jet sticking closed or float level out of adjsutment.
Could be problem with fuel lock if your engine was designed for California standards. New style fuel caps tend to cause fuel lock by not allowing air into fuel tank. Try using your washer with less than a full tank of fuel (so that fuel will not spill out) and run with cap loose on tank. If problem goes away, replace the cap with one that has better venting. If no joy, could be issue with low oil sending unit. Try running the engine with oil sensor disconnected. Leave disconnected or replace as necessary.
you have to monitor the fuel pressure, if you find that the pressure drops off as soon as the engine has started you should check the fuel pump resistor located on the frame next to the windshield washer tank. If the resistor is ok see if you can keep the engine running with carb cleaner. If the engine stays running on the carb cleaner try disconnecting the mass air flow sensor and see if the engine continues to run by itself. This is all taking for granted that there is not a security system problem. check if the security light keeps flashing while trying to start.
It is a diaphram carb. Doe's the primer **** straight gas or does it have air bubbles in it? If it has bubbles in it then it is a leak in the fuel line.
If not then Unhook the intake fuel line and pump the bulb until all of the gas is out of it. Then pour the gas out of the tank and rinse it out with new gas. Pour in new gas and it should be ok.
check the fuel filter to make sure it is open/clean also check the fuel pump pressure to make sure it is okay? check for air leaks in the fuel lines for lose hoses connections and fuel it getting to the throttle body
My Kracher 2500 pressure washer has no pressure unless I remove the nozzle. If, I remove the nozzle and pump the trigger several times and quickly replace the nozzle it works fine until I release the trigger. Karcher (online) suggested I remove and clean the unloader which I did. It still doesn't work correctly. What another solution?
The engine requires more fuel at higher loads. If unit sat up for some time the jets in carbureator may have become partially plugged due to varnishing. If this is the case, the easiest fix, is to add 'Sea Foam' fuel system cleaner to gas tank. engine may have to run several minutes for this to work. I reccomend tripling the dosage amount reccomended on the label. This should also resolve the problem if fuel starvation is caused by 'sticking needle and seat' problems. If engine stalls with an abrubt clunk, then unloader problems may be responsible. I unit sat up for a long-long time, you may be better off removing the carbureator and rebuild it or have it rebuilt professionally.