Gas Pressure Washer: Smoke coming out of the engine exhaust
Smoke blows from the exhaust if the engine is overfilled with oil. Place the pressure washer on a level surface and check the oil level using the dipstick. If the engine is overfilled with oil, drain oil to within the proper range.
An improper fuel/air mix can also cause the engine to smoke. Check the engine choke for the proper setting. A choke that won't open causes excessive smoke. Check your carburetor system and rebuild or replace the carburetor if necessary.
Tune up the pressure washer engine to help eliminate exhaust smoke. A tune-up includes changing the oil, checking the ignition system and adjusting the throttle and choke controls.
Clean and rebuild the pressure washer carburetor
Rebuild kits are available for most carburetors. The kit contains essential components such as jets, pins, seals and gaskets for overhauling the carburetor. You can sometimes fix a fuel supply problem by disassembling, cleaning and rebuilding the carburetor.
Replace the pressure washer carburetor
Over time, varnish from stale gasoline builds up in the carburetor, decreasing the amount of air/fuel mixture reaching the engine. Replace the carburetor if it's severely clogged with varnish or if the orifices are clogged with debris and can't be cleared using carburetor cleaner and compressed air.
Tune up the pressure washer engine
A tune-up restores the pressure washer's engine to its peak operating condition. A tune-up includes changing the oil, cleaning the engine, replacing the air filter, checking the ignition system, inspecting the carburetor, adjusting the throttle and choke controls, and adjusting and lubricating all moving parts.
The unloader valve recirculates water to protect the pump from damage. If the unloader valve is defective, replace it using the steps in this repair guide.
Air in the inlet water supply can damage the check valves. If the pump won’t build up pressure due to damaged check valves, follow these steps to replace the check valves.
The pump can be damaged by air in the inlet water supply or by chemicals that remain in the pump body after using the chemical injection system. Follow these steps to replace a damaged pump.
Learn how to get the best results when using a pressure washer.
Spray tips vary in pressure and angle of spray. This guide matches the spray tip to the cleaning job.
Follow this advice to winterize your pressure washer.