What should the gap be on a spark plug for a lawn mower?
Likewise, what should the spark plug gap be on a Briggs and Stratton?
Flathead Engine Spark Plugs & Gaps
|Replacement Part Type||Briggs & Stratton Spark Plug Part Number||Spark Plug Gap|
|Electromagnetic Suppression (EMS) (Replaces Champion QC12YC)||691043 792015||.030”|
|Extended Life Series® OHV Spark Plug Platinum (Replaces Champion RC12YC)||696202 5066 (5066D, 5066H)||.030”|
Keeping this in consideration, what happens if you put the wrong spark plug in your lawn mower?
Spark plugs that are gapped incorrectly can cause an engine to miss, or run erratically, especially during idle. The incorrect spark plug gaps can cause uneven firing of individual spark plugs and delay engine combustion; both of which can cause an engine to miss or idle erratically.
What happens when the spark plug gap is too big?
One of the key factors that makes a spark plug work well, or not, is the size of the gap between the electrodes. ... However, if the spark plug gap is too large, the spark is unlikely to consistently "jump" across the long distance between electrodes, thus leading to a rough-running engine or one that doesn't run at all.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.
- Your car is a rough starter. ...
- Your car is a rough idler. ...
- Your engine will sometimes misfire. ...
- Your engine surges. ...
- Your fuel consumption is higher than usual. ...
- Your car isn't accelerating as it should.