Bad mower spark plug

Thriving Yard is bad mower spark plug affiliate for companies including Amazon Associates and earns a commission on qualifying purchases. Sometimes identifying if it actually is the spark plug that is the problem can be a challenge. Read on to see what makes a spark plug go bad, how to tell if yours has reached the end of its life, bad mower spark plug, how to reinstall one, and when it needs replacing. Lawnmowers can have a variety of problems, and it can sometimes be difficult to diagnose which part is to blame.

The electrodes on a spark plug must be clean and sharp to produce the powerful spark required for ignition. The more worn or dirty spark plugs are, the greater the pull on the rewind and more effort is required to produce an adequate spark. These problems may also cause excessive fuel consumption, deposits on the cylinder head and oil dilution. Luckily, spark plugs are one of the easiest and most inexpensive engine components to replace. To check if your spark plug has gone bad you'll need to inspect your part for common signs suggestive that it might be fouled or damaged. Check out the steps below which outline how to determine why your spark plug is no longer working correctly. Review the FAQ on troubleshooting ignition system problems to learn how a spark tester can identify problems with the ignition coil, switch, flywheel or other small engine parts.

Bad mower spark plug

The job of a spark plug is to ignite the fuel and air mixture that the carburetor sends to an engine cylinder. The energy created from this combustion process is what powers your equipment. If the spark is weak, this process cannot happen effectively. The most common symptom of a bad spark plug is that equipment is harder to start than normal. A mower with a pull cord may take several more pulls before the engine fires up. If your mower has a key start, it will simply fail to start. In this case, the spark created by the spark plug is too weak to ignite the fuel and air mixture in the cylinder. Each time you attempt to start the engine more fuel is pushed into the cylinder. The more fuel present, the harder the engine will be to start. If you continue to try and start the equipment without success, you will flood the engine. The fastest way to fix this problem is to remove the spark plug to drain out the fuel. The engine might even stall out completely while you are mowing. You may also notice that it becomes increasingly more difficult to restart the mower each time that it dies. This happens because the electrode gap is getting wider due to the increased temperature of the engine.

Look at the Fuel Filter The fuel filter keeps dirt and contaminants in the fuel from getting into the carburetor. Source: Champion Auto Parts.

Due to carbon build-up and a weakened electrode, a small engine spark plug will degrade over time. Fortunately, the spark plug is one of the easiest engine components to replace. This step-by-step guide will teach you how to tell if a lawn mower spark plug is bad along with tips for testing other garden equipment. The ignition process relies on a suitable balance of fuel and air being drawn through the carburetor into the engine, a properly operating ignition coil , and a functioning spark plug. The flywheel has permanent magnets built into it, and as it moves past the ignition coil a magnetic field is created which induces electricity, allowing the ignition coil to send a high-voltage pulse to the spark plug. When the piston reaches the top of the cylinder, the spark plug ignites the compressed fuel and air mixture, forcing the piston back down. The spent fuel exits an exhaust port, fresh fuel enters the intake port, and the combustion process is repeated to keep the engine running.

From this guide, you will learn How to tell if a lawn mower spark plug is bad. This guide will quickly help you find and remove your spark plug and use five 5 simple steps to determine whether your lawn mower spark plug is bad. The most common way to tell if your lawnmower spark plug is failing is that the engine is more difficult to start. Your push mower engine may stutter and take several pulls to start. If you have a sit-on tractor mower, the engine may not start on the first turn of the key. You may also experience loss of power and slower acceleration. These may appear subtle at the start, but over time, they can become more and more apparent, and these signs point to a bad lawn mower spark plug. A: The spark plug is an electrical component that fits into the engine cylinder head, and its job is to spark the ignition of the fuel to create combustion within your engine. Knowing why a well-conditioned spark plug is so essential to run a Lawnmower engine effectively is helpful to know the job of a spark plug. A: The spark plug is connected to high voltage generated by an ignition coil or magneto.

Bad mower spark plug

Knowing how to test a spark plug on a lawn mower is something that can really come in handy. The best part is, once you know how to test one spark plug, you know how to test them all. The main signs that potentially indicate a bad lawn mower spark plug are:. In order to give your spark plug a quick examination, you will need a couple of tools. Let me go through a very broad description of how to test a spark plug on a lawn mower before I dive into detail.

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Check the air filter The job of the air filter is to remove dirt and debris from the air before it enters your engine. The engine might even stall out completely while you are mowing. Author Recent Posts. Find Model Number. Its summer — time for yard work The air is warmer and the grass is growing — time to break out the lawn mower. Under no circumstances will we be liable for any loss or damage caused by your reliance on any content. Learn more about Champion parts , find your car part , or find where to buy your auto part today. Engine Parts. They are pretty inexpensive and will pay for themselves with the amount of gas you will save. The most common symptom of a bad spark plug is that equipment is harder to start than normal. Plus get amazing DIY repair secrets! If your spark plug is damaged or too worn down for continued use, the best option is just to get a new one. The fuel filter keeps dirt and contaminants in the fuel from getting into the carburetor. Source: besthomegear.

If you have spent any length of time using a gas-powered lawn mower, you may have come across the problem of a bad spark plug. A spark is needed for the internal combustion engine to run, and a spark plug is essential to the function of your lawn mower. But luckily for you, there are a number of pretty obvious ways to tell a lawn mower has a bad spark plug.

Engine Parts. It can also work itself loose, causing issues. If the engine does not turn over at all, then there may be a problem with your ignition system. The more worn or dirty spark plugs are, the greater the pull on the rewind and more effort is required to produce an adequate spark. A larger gap decreases or weakens the spark output. Source: Champion Auto Parts. If you continue to try and start the equipment without success, you will flood the engine. If it becomes clogged, it can prevent a sufficient amount of fuel from passing into the combustion chamber, preventing your engine from starting. Fuel Stabil Shop Spark Plug Parts. This would indicate the problem probably lies somewhere else fuel, carburetor, valves, etc. The filter may become clogged and not allow a sufficient amount of air into the engine for it to run smoothly.