To close the gap lightly tap the bottom of the plug against a hard surface.
The gap should never be opened by prying against the center electrode. Got to see how it holds up against some higher end cars and i am pleased with the results.Robs video on the. If the gap is too small use a proper gapping tool to slowly force the ground away from the center electrode. Fun cruise in the supra with the sideways gang. When checking the gap be gentle and do not force the tool. It's best to use a set of feeler gauges or a wire spark plug gap checking tool as these are more accurate than the disc type and less likely to break the electrode. When checking or setting the gap its important to use the proper tools in order to prevent damage to the plug. If you do need to gap a plug that has multiple grounds contact the manufacturer for appropriate instructions. Some applications (typically very high-performance and rotary motors) have spark plugs that have no ground strap while others have multiple ground straps, these are generally very difficult to gap and should be set correctly from the factory. Some platinum and iridium plugs have warnings on them not to change the gap, however these also need to be checked and properly set.
Some spark plugs come pre-gapped, but these should still be checked as the gap can get changed during the course of normal shipping and handling. The proper specifications can be found in the owner's manual or on a tag under the hood. Setting the spark plug gap correctly can improve fuel economy and power. The gap is the distance between the center electrode of the spark plug and its ground strap.
Gapped car how to#
Knowing how to gap spark plugs is an important part of a tune-up procedure.
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