How do I know if my lawn mower spark plug is bad?
Here's How to Know if a Lawn Mower Spark Plug is Bad
- You can't get the engine to fire up at all.
- You have to tug extra hard for longer than usual on the rewind.
- Your lawn mower loses power while moving.
- The gas runs out quicker than it used to.
Just so, what happens when a spark plug is bad in a lawn mower?
After the engine finally begins to start, it may tend to die out immediately if something is wrong with its spark plug. In some cases, the engine may run for a while then stop while mowing. ... A bad spark plug also may cause misfires, with the engine sputtering, missing or popping.
Considering this, how do I get my spark plugs to work again?
How often should you replace a lawn mower spark plug?
How often should you change spark plugs in a lawn mower? Lawn mower spark plugs should be changed according to your lawn mower owners manual, or annually if your manual does not specify. Another good option is to change the spark plugs once the winter season starts so it will be ready to go when Spring arrives.The spark plugs in both types of engine work on the same basic principle. ... Some automotive and lawn mower spark plugs may be interchangeable, but many others are not because of physical differences.However, you can not spray the carburetor when the engine is off since it cannot do the cleaning without being propelled. All you need to do is to start the engine and spray directly at the center of the carburetor while it is running. Any deposits clogging in the carburetor will easily be removed.Using WD-40 to repel water from spark plugs, distributors, alternators, and batteries is a good way to prevent corrosion and keep moisture away. You can also use it to ease the removal of spark plugs, especially if there is any rust or corrosion.The most common reason for why your riding mower will turn over but not start is likely due to bad gas or a dirty carburetor. You can usually fix the problem by removing and cleaning out the carburetor and making sure that your gas is fresh. There are carb cleaners you can purchase to help you with this.Ideally, most automobile spark plugs use a thread size of about 14mm thread why those of lawn mower range between 10 to 12 mm. Because of these differences in thread sizes, they just won't fit into the same hole or the unit in which the plug is to be fit in.Ignition Module Failure
When it does fail, it is usually due to heat caused from improper wiring of the ground wire to battery voltage. If the engine does not produce spark, other areas of the ignition system should be checked before focusing on the ignition module as source of failure (see above).