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What happens if spark plug gap is too narrow?

What happens if spark plug gap is too narrow?

When the spark plug gap is too narrow, or under specifications, the amount of room needed for the air-fuel mixture between the hot tip and the ground strap is decreased. The duration of the spark has less travel distance, thus not remaining hot enough with sufficient charge to ignite the air-fuel mixture.

Can too small of a spark plug gap cause misfire?

A: Ungapped spark plugs will cause misfires as the gap between the electrodes could be too small or too wide. The air/fuel mixture then may not ignite or ignite on the wrong stroke, which can cause misfires.

Does spark plug gap affect gas mileage?

Why Do Worn Spark Plugs Affect MPG? All spark plugs become less efficient – and less fuel efficient – over time. As the spark plugs wear, the spark plug gaps widen, also weakening MPG. This is because the wider the spark plug gap, the more voltage is required to arch between the electrodes.

Does spark plug gap affect timing?

Changing the spark plug gap won’t affect the ignition timing, but it will have some affects on the ability of the spark plug to ignite the fuel.

What will be effect if spark plug gap is more than specification?

The Spark-Plug Gap 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.

Does spark plug gap affect cold start?

The coming cold weather can affect your vehicle’s engine and spark plug performance. The first word of advice is this: Don’t let a sluggish start tempt you to run out and buy hotter car or truck spark plugs. Properly gapped spark plugs require less energy to create the spark that gets your engine running.

When should you run a hotter spark plug?

If it the heat range is too hot, your engine could experience detonation, pre-ignition, or power loss. Most spark plug manufacturers recommend that the tip temperature remain between 500° C and 850° C.

When should you use a hotter spark plug?

1. Air/Fuel Mixture: Lean air/fuel ratios raise cylinder-head temperatures, requiring a colder plug. Rich air/fuel ratios require a hotter plug to prevent fouling. Mixtures that cause the plugs to read lean might contribute to preignition or detonation.

Will a hotter spark plug stop fouling?

Yes, if your engine is burning oil a hotter plug is designed to burn off the excess oil and keep the spark plug from fouling.

Do hotter spark plugs make a difference?

The heat range of a spark plug has only a minute effect on combustion chamber and overall engine temperature. A cold plug will not materially cool down an engine’s running temperature. (Too hot of a plug may, however, indirectly lead to a runaway pre-ignition condition that can increase engine temperature.)