How often should lawn mower spark plugs be changed?

For standard lawn mower and small engine maintenance, you should check and/or replace spark plugs: once a season. every 25 hours of use.

How long does a lawn mower spark plug usually last?

The standard life of a lawn mower spark plug is 25 hours.

It doesn't matter how well you take care of your lawn mower, spark plugs wear out after about a season's use.

How do I know if my lawn mower spark plug is bad?

The more worn or dirty spark plugs are, the greater the tug on the rewind and more effort is required to produce an adequate spark. If you haven't turned on your engine recently, your mower won't start and/or you have to tug repeatedly on the rewind to start the engine, a damaged spark plug may be the culprit.

How long should sparkplugs last?

A standard copper spark plug has an average life span of 10,000-20,000 miles. Silver plugs, used for older vehicles, can last up to 20,000 miles. Expensive iridium spark plugs or platinum spark plugs can last 60,000 miles. Extended life spark plugs or long life spark plugs can last 100,000 miles.

Do lawn mower spark plugs wear out?

Due to carbon build-up and a weakened electrode, a small engine spark plug will degrade over time. If the engine on your lawn and garden equipment won't start, or it runs poorly, chances are the spark plug is worn out. Fortunately, the spark plug is one of the easiest engine components to replace.

How To Check, Clean

How do I know if my spark plugs need changing?

Can I use wd40 to clean spark plugs?

WD-40 removes carbon residue and keeps moisture away from spark plugs and spark plug wires. WD stands for Water Displacement, so if your spark plugs are wet or you need to drive moisture away from ignition distributors, WD-40 will do the trick.

What happens if you dont change spark plug?

Spark plugs will depreciate over time, so various engine issues will arise if they are not replaced. When the spark plugs do not generate the adequate spark, the combustion of the air/fuel mixture becomes incomplete, leading to loss of engine power, and in the worst-case scenario, the engine will not run.

Should I change spark plugs after 10 years?

When should spark plugs be replaced? There are two types of spark plugs: conventional and long-life. Conventional spark plugs need to be replaced every 30,000-50,000 miles. Long-life (iridium- or platinum-tipped) spark plugs need to be changed between 60,000 and 150,000 miles, depending on the vehicle.

How can I make my spark plugs last longer?

Cautiously extract the spark plug from its place by using a steadfast spark plug socket twist. Then, saturate it in a carburetor cleaner or a thinner liquid that seems like diesel, kerosene, or any other alcohol blend.

Why does my lawn mower only run for a few seconds then dies?

If your lawn mower starts, runs briefly, then dies these are the four most common reasons that's happening: Dirty carburetor / clogged carburetor bowl. Old gasoline that has gone bad. Dirty or defective spark plugs.

How do you clean a lawn mower spark plug?

Spray the dirty lawn mower spark plug with brake cleaner and let it soak for about ten minutes. Wipe the plug with your clean cloth or rag to remove the residue. If needed, repeat the spraying, soaking and wiping several times. Make sure you end up with a spark plug that is clean from the threads to the contact point.

Why does my lawn mower run for 10 minutes then dies?

As the fuel level drops, a vacuum begins to form in the fuel tank because air can get in to fill the space the consumed fuel occupied. After about 10 or 15 minutes, the vacuum will become strong enough that fuel will stop flowing to the carburetor and the lawnmower will die.

How often should you replace lawn mower blade?

For the average homeowner, a good rule of thumb is to replace your mower blades annually. Sharpening mower blades on a regular basis will prolong the life of your blades. Be sure to take protective measures if you sharpen your blades at home - wear protective gear and disconnect the spark plugs.

How often do you change lawn mower oil?

For existing push mowers, like shown in the video below, its recommended to change and replace the oil at least once a season or for every 50 hours of run time. For existing riding mowers, it is recommended to change and replace the oil at least once a season, or for every 100 hours of run time.

Can you clean and reuse spark plugs?

You can clean a fouled spark plug and reuse it, but it might not function as well after that. If your spark plug is too worn or dirty to clean easily, you'll need to replace it.

Do spark plugs get old?

Luckily, spark plugs don't require replacement very often and can go years and many miles before replacement is a must. Most auto manufacturers suggest having new spark plugs installed about every 30,000 miles; however, spark plug longevity depends on the condition and type of spark plug.

Can I change my own spark plugs?

Changing spark plugs takes about an hour (for a four-cylinder engine) and will save you at least a hundred bucks in labor if you do it yourself. In most cases it's a simple job that will help to maintain peak performance and the highest possible gas mileage.

Should you grease spark plugs?

Metal shell stretch changes the heat rating of the spark plug and can result in serious engine damage caused by pre-ignition. Do not use anti-seize or lubricant on NGK spark plugs. It is completely unnecessary and can be detrimental.

What color should spark be on spark plug?

If the firing end of a spark plug is brown or light gray, the condition can be judged to be good and the spark plug is functioning optimally.

What can I spray in my spark plug hole?

Yes, you can spray carb cleaner, short for carburetor cleaner, inside the spark plug hole. This'll help dissolve hardened debris and loose materials in the spark plug wells. After that, you can remove the filth with a compressed air can.

What problems can old spark plugs cause?

Do spark plugs make a difference?

A Noticeable Difference

Increased Fuel Economy – Misfiring spark plugs can reduce fuel efficiency by as much as 30%. New plugs that are replaced at regular intervals maximize fuel economy, saving you money.