How To Tell If A Spark Plug Is Bad Small Engine

This type of mistake can cause significant engine damage while installing a spark plug that is too short will cause poor gas usage.

How to tell if a spark plug is bad small engine. The vehicle encompassing jittery sound will also cause your vehicle to vibrate. Ive been a small engine mechanic for many years so my videos are loaded with tips and tricks that i have learned and want to pass on to you. Since the engine only starts due to two principles. The piston rings are likely damaged if the tip of the spark plug is covered with oil.

If you havent turned on your engine recently your mower wont start andor you have to tug repeatedly on the rewind to start the engine a damaged spark plug may be the culprit. Checking small engine spark plugs. Examine the tip of the spark plug where the plug enters the engine for signs of wear. The electrodes on a spark plug must be clean and sharp to produce the powerful spark required for ignition.

Replace the plug at the interval recommended by the manufacturer. The combined hesitation and surging could indicate a spark plug problem. It can indicate a spark plug problem in which a cylinder misfires only while idle. How to tell if a spark plug is bad duration.

If you or someone else installed the wrong size spark plug and it was too long for your engine you may find a flattened or broken the electrode. 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. Quick video on how to check for spark plug fire in any small engine or any engine for that matter. How to tell if a spark plug is bad duration.

A grayish colored tip indicates that the engine is in working order.