Sometimes my plugs don’t want to go in nicely, especially when you get to the bottom. Probably old anti-seize or something. So I took an old plug and ran a couple slots up either side to clear the threads. I used a Dremel with a cutoff wheel. With the AeroVee you don’t want to force the plugs in.
3 Likes
The tightness at the bottom could be caused by carbon buildup, might be able to check for this with a bore scope or you might see it by just looking down the plug hole
1 Like
Absolutely what I made years ago, for many plug changes, and I very carefully use it on my aerovee, with at least a small bit of grease to catch junk that gets cleaned out. I would not use much torque at all. . I put more than just one cut mark, maybe 3 or 4. It does work well!
1 Like