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.
Keeping this in view, how can you tell if a spark plug is good?
Test the spark plug ignition by disconnecting the spark plug wire from the spark plug. Hold the end of the spark plug wire close to a metal surface. If the spark plug is good, you will see a spark or you'll hear a crackling noise. This means that voltage is getting through the wire to the spark plug.
Also to know is, will any spark plug work in a lawn mower?
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.
What does a weak spark look like?
Weak sparks are orange or red and may be hard to see in daylight. If you did not see a spark, remove the coil wire from the distributor cap. Attach the spark tester to the distributor end of the coil wire. Crack the engine and check for a good spark at the spark tester.