Universal Spark Plug Gap Tool with Feeler Gauge for Most 10mm 12mm 14mm 16mm Spark Plugs Red

Es buen producto, cumple con su objetivo

Works perfectly. To accurately gap plugs you must allow for the amount of spring in the plug’s ground strap, I used a .027 feeler to achieve a .032 gap after tension is released. Some plugs might not spring back as much, mine were NGK 6510s. Clamping tool in vice made gapping so much easier. Didn’t use feeler gauge that came with tool, can’t say if it’s good or bad.

Petit bidule bien pratique pour ajuster le gap sur les bougies. Simple et rapide.

Red Finish is nice. Tool works well. I had a few spark plugs to set the other day. Having a good size wheel with good thickness is a big plus. If wheel was smaller or thinner, it would be more difficult or more uncomfortable on your fingers to bend the spark plug ground terminal. The screw is easy to turn, but you need to have screw press tightly to get ground electrode to bend and not spring back as much. I needed a gap of 0.035. I found that I needed a feeler gauge of 0.032 or even 0.030 to bend electrode and have it spring back to 0.035. Using a feeler gauge of 0.035 to bend electrode to 0.035 isn't going to work. You have to downsize the feeling gauge that you select to fill the gap when turning the wheel. But once you select the right one, you are set. I was working with NGK Power V 7252 copper core with nickel terminals. I use an accurate gapper tool to verify that spark plug gap did get set to 0.035. Make sure to verify using your feeler gauge or some other gap measurement tool.

Maybe it's my lack of skill, but this takes all the guesswork out of adjusting a spark plug with the coin or wire type tools. Be aware you may need to use a gauge slightly smaller than your desired gap when compressing the plug