Is your Simpson pressure washer sputtering, refusing to start, or just not delivering the powerful cleaning you expect? Don't throw in the towel just yet! Pressure washers, even reliable ones like those from Simpson, can sometimes throw a wrench in your weekend plans. Luckily, many common issues are easily fixed with a little know-how. Let's dive into some troubleshooting tips and quick fixes to get your pressure washer roaring back to life.
Why Won't My Simpson Pressure Washer Start? Let's Investigate!
A pressure washer that won't start is frustrating, but before you panic, let's go through the most common culprits. We'll start with the simplest solutions and move on to more involved checks.
1. Fuel Issues: The First Line of Defense
- Is there enough fuel? This might seem obvious, but it's the most frequent reason. Top it off with fresh gasoline. Old fuel is a pressure washer's worst enemy. It can gum up the carburetor and prevent the engine from starting.
- Is the fuel shut-off valve open? Locate the fuel valve (usually a small lever near the fuel tank) and ensure it's in the "on" or "open" position.
- Is the fuel filter clogged? The fuel filter prevents debris from entering the carburetor. Inspect it (usually located in the fuel line or within the fuel tank). If it's dirty, clean or replace it. A clogged filter starves the engine.
- Time for fresh fuel! If your pressure washer has been sitting unused for a while, drain the old fuel and replace it with fresh fuel. Consider using a fuel stabilizer to prevent future issues.
2. Spark Plug Problems: The Ignition Spark
A faulty spark plug can prevent the engine from igniting the fuel.
- Check the spark plug: Disconnect the spark plug wire. Use a spark plug wrench to remove the spark plug. Inspect it for cracks, carbon buildup, or damage.
- Clean or replace the spark plug: If the spark plug is dirty, clean it with a wire brush. If it's damaged or excessively worn, replace it with a new one of the correct type (refer to your owner's manual).
- Test for spark: Reconnect the spark plug wire to the spark plug. Ground the spark plug against the engine block (hold the insulated part of the wire). Pull the starter rope. You should see a spark jump across the spark plug gap. If not, the spark plug is definitely bad, or the ignition coil may be failing (a more advanced repair).
3. Low Oil Shutdown: Protecting the Engine
Most Simpson pressure washers have a low-oil sensor that prevents the engine from starting if the oil level is too low. This is a safety feature to protect the engine from damage.
- Check the oil level: Use the dipstick to check the oil level. Add oil of the correct type (as specified in your owner's manual) until the level reaches the "full" mark.
- Oil sensor malfunction: In rare cases, the oil sensor itself can malfunction, even if the oil level is adequate. If you've checked the oil and the engine still won't start, this could be the culprit. This is a more advanced repair that may require professional assistance.
4. Air Filter Woes: Breathing Easy
A dirty or clogged air filter restricts airflow to the engine, which can prevent it from starting or cause it to run poorly.
- Inspect the air filter: Remove the air filter cover and inspect the air filter.
- Clean or replace the air filter: If the air filter is dirty, clean it with compressed air or wash it with soap and water (allow it to dry completely before reinstalling). If it's excessively dirty or damaged, replace it with a new one.
5. Carburetor Clogs: Fuel Delivery Issues
The carburetor mixes air and fuel to create the combustible mixture that powers the engine. If the carburetor is clogged, the engine won't get the fuel it needs.
- Carburetor cleaning: This is a more advanced repair. You can try using carburetor cleaner to dissolve any deposits. However, sometimes a complete disassembly and cleaning of the carburetor is necessary. If you're not comfortable doing this yourself, it's best to take the pressure washer to a qualified technician.
My Pressure Washer Starts, But Has No Pressure! What's Going On?
So, the engine roars to life, but you're getting a weak stream of water or none at all. Here's what to check:
1. Water Supply: The Foundation of Pressure
- Is the water supply turned on fully? Make sure the water supply is turned on all the way and that the hose is not kinked or blocked.
- Is the water inlet filter clogged? The water inlet filter prevents debris from entering the pump. Inspect it (usually located where the garden hose connects to the pressure washer). If it's dirty, clean it.
2. Hose and Nozzle Blockages: Clearing the Path
- Check the hose for kinks or blockages: Inspect the high-pressure hose for kinks, bends, or other obstructions.
- Clean the nozzle: The nozzle is a common point of blockage. Use a nozzle cleaning tool (often included with your pressure washer) to clear any debris. You can also try soaking the nozzle in vinegar or a commercial descaling solution.
3. Pump Problems: The Heart of the Pressure Washer
- Air in the pump: Air trapped in the pump can prevent it from building pressure. To purge the air, disconnect the high-pressure hose and run the pressure washer for a minute or two with the water supply turned on. Then, reconnect the hose and try again.
- Damaged pump: If none of the above steps work, the pump itself may be damaged. This could be due to freezing temperatures (which can crack the pump housing) or wear and tear. A damaged pump usually requires replacement, which is a more involved repair.
4. Unloader Valve Issues: Pressure Regulation
The unloader valve regulates the pressure of the water. If it's malfunctioning, it can cause low pressure or no pressure at all.
- Unloader valve adjustment: Some unloader valves are adjustable. Refer to your owner's manual for instructions on how to adjust the unloader valve.
- Unloader valve replacement: If the unloader valve is damaged or worn, it may need to be replaced.
The Pressure Washer Keeps Pulsating: A Rhythmic Problem
A pulsating pressure washer is annoying and indicates an issue. Here's what to investigate:
1. Water Supply Issues: A Repeat Offender
- Insufficient water supply: As with low pressure, make sure the water supply is adequate and that the hose is not kinked or blocked.
- Air in the water supply: Sometimes, air can enter the water supply, causing the pressure to fluctuate. Try running the water for a few minutes before connecting it to the pressure washer to purge any air.
2. Nozzle Problems: A Simple Fix
- Partially blocked nozzle: A partially blocked nozzle can cause the pressure to pulsate. Clean the nozzle thoroughly.
3. Pump Problems: Internal Issues
- Worn pump seals: Worn pump seals can cause the pressure to fluctuate. This is a more advanced repair that may require professional assistance.
- Damaged pump components: Other damaged pump components can also cause pulsation.
My Simpson Pressure Washer is Leaking! Where's it Coming From?
Leaks can be messy and indicate a problem that needs attention.
1. Hose Connections: The Most Common Culprit
- Loose connections: Check all hose connections for tightness. Tighten any loose connections.
- Worn O-rings: O-rings are used to seal hose connections. If they're worn or damaged, they can cause leaks. Replace any worn O-rings.
2. Pump Leaks: A Sign of Wear
- Pump seals: Leaks from the pump itself often indicate worn pump seals. This usually requires replacing the seals, which is a more involved repair.
- Cracked pump housing: In rare cases, the pump housing can crack, causing leaks. This is usually due to freezing temperatures. A cracked pump housing typically requires pump replacement.
3. Detergent Tank Leaks: Soap Issues
- Loose cap: Make sure the detergent tank cap is securely tightened.
- Cracked tank: Inspect the detergent tank for cracks. If it's cracked, it needs to be replaced.
Preventative Maintenance: Keeping Your Simpson Happy
The best way to avoid pressure washer problems is to perform regular preventative maintenance.
- Change the oil regularly: Follow the oil change schedule in your owner's manual.
- Clean the air filter regularly: Keep the air filter clean to ensure proper airflow to the engine.
- Use fuel stabilizer: Add fuel stabilizer to the fuel tank if you're not going to be using the pressure washer for an extended period.
- Protect from freezing: Never allow the pressure washer to freeze. Store it in a heated garage or basement during the winter months. If you can't store it indoors, drain all the water from the pump and hoses.
- Check hoses and connections: Regularly inspect hoses and connections for wear and tear. Replace any worn or damaged parts.
Frequently Asked Questions (FAQs)
- Why won't my pressure washer spray soap? Make sure the detergent tank is full, the detergent nozzle is attached, and the siphon hose is properly connected. Some models require a low-pressure nozzle for detergent application.
- What type of oil should I use in my Simpson pressure washer? Refer to your owner's manual for the recommended oil type and weight. Typically, a 10W-30 or 10W-40 oil is used.
- How do I winterize my pressure washer? Drain all the water from the pump and hoses. Use a pump saver solution to protect the pump from freezing.
- My pressure washer smells like gas. What should I do? Immediately turn off the engine and check for fuel leaks. Do not operate the pressure washer if there are any fuel leaks.
- How often should I change the oil in my pressure washer? Refer to your owner's manual for the recommended oil change interval. Typically, it's every 25-50 hours of use.
With a little troubleshooting and preventative maintenance, you can keep your Simpson pressure washer running smoothly for years to come. Remember to always consult your owner's manual for specific instructions and safety precautions. Don't hesitate to seek professional help if you encounter a problem you can't resolve yourself.