Spark plug seat reconditioning

Posted by JeromeSolberg On 2022/1/25 0:00:04

Hi folks,

I was having trouble with one of my spark plugs, seemed like it was getting a little bit of blowby, you could see a little bit of oil bubble past the plug after you had run the thing a long time, from what I understand that would be caused by a bad seal at the spark plug gasket. I thought, well, maybe the spark plug wasn't seating very well, and since I had the head off I cleaned out the well and wire-brushed the seating surface, and in pretty much all of the spark plugs the seat, e.g. where the spark plug gasket sits, is rather pitted. I don't think I was having any problem except with that one spark plug, but now that I've wire brushed the paint off in the sealing surface, I can see it clearly everywhere.

I saw that TimeSert sells this tool, kinda pricy. I also wonder if I cut too much of the seat down the spark plug would be sticking out too far and maybe the valve would bash into it:

Time-Sert Spark Plug Seat Reconditioning kit.

I guess I could take the head to a machine shop to take care of this, but that would also be $$ and have the same possible problem.

I will get a picture later and post.

Thanks!