If your Karcher pressure washer soap injector is not working, the most likely problem is a failed or clogged chemical injection kit. This kit contains the parts that repair most injector-system problems, so replacing it is the first solution to consider when your pressure washer soap dispenser is not working, your pressure washer is not dispensing soap, or the unit won't draw soap. If the kit is not the cause, inspect the detergent siphon or siphon tube for cracks, kinks, or blockages, then check the soap filter, injector spring, injector ball, and injector O-ring for debris or damage. Make sure the black soap nozzle is installed, since the injector typically draws detergent only at low pressure with the correct nozzle. A clogged soap tank outlet, hardened detergent, or a loose connection can also keep the detergent siphon from working. Flush the soap system with clean water before testing it again. Repair Clinic carries Karcher pressure washer chemical injection kits and individual pump, hose, filter, gasket, and seal parts. Enter your pressure washer model number to find the exact replacement part for your specific Karcher machine.
01 - Karcher Chemical Injection Kit
Replace the chemical injection kit. The chemical injection kit contains the parts needed to repair most problems with the injector system.
Enter model number to search for the required part specific to your product