Do you have to Gap Harley spark plugs?

Do you have to Gap Harley spark plugs?

When gapping new spark plugs be sure to use the proper tool. Most Harley models with electronic ignition call for a range of 0.38 to 0.42 (0.40 average) gap, but consult your owners manual for your specific model. …

How do you adjust the gap on a iridium spark plug?

To increase the gap size:

  1. Step 1: Use needle nose pliers or spark plug gapping tool to bend the ground strap up to the desired height. DO NOT LET THE PLIERS OR GAPPING TOOL TOUCH THE IRIDIUM CENTER ELECTRODE OR PORCELAIN.
  2. Step 2: Re-check the gap with a calibrated gapping tool.

What should the spark plug gap be on a NGK?

The recommended gap is the “sweet spot” for most riders, excluding heavily modded engines and aftermarket ignition systems. We have witnessed evidence on engines that carry a ccp north of 180, or so, that .035″ on the NGK’s we use, will show more power, across the board.

What does a spark plug gap gauge do?

A spark plug gap gauge is a disc with a sloping edge, or with round wires of precise diameters. It is used to measure the length of the gap between the ground and central electrodes. The simplest gauges are a collection of keys of various thicknesses which match the desired gaps. You simply need to keep making adjustments until the key fits snugly.

Do you need to gap spark plugs for 6 cylinder engine?

Whether or not you need to make an adjustment will depend on the engine. New spark plugs might be pre-gapped for a V-8 engine, allowing you to install all 8 plugs unchanged. However, if installed in a 6-cylinder engine, all 6 plugs would require re-gapping.

How big is the spark plug gap on a Promod Turbo?

Some applications such as ProMod turbo cars using M1 fuel frequently run a spark plug gap as small as .012″, even though they are equipped with some of the highest output ignition systems providing in excess of 60,000 Volts high current and high mJ power output.

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