Compression tester

[jdpalmer]

Has anyone made an adapter to check compressor on cylinders that fit in spark plug hole

[29closedcabguy]

Most of the suppliers sell a spark plug adapter so you can run modern 14mm plugs. This will let you run a compression test using a standard 14mm fitting. Snyder's part# is A-12405-ADP $6.75. It's what I use.

[Gary WA]

Originally Posted by jdpalmer

Has anyone made an adapter to check compressor on cylinders that fit in spark plug hole

Yes, using old plug bust off porcelain JB Weld together or purchase from vendors.

[ArtimusGordon]

Originally Posted by Gary WA

Yes, using old plug bust off porcelain JB Weld together or purchase from vendors.

I busted the porcelain insulator out BUT did not have to JB weld in a adapter because my compression gauge has a large rubber tip that fits the opening and I just press the gauge into the hole and take a reading. 👍 😷

[David R.]

I busted porcelain out of an old plug and then threaded the hole with pipe thread tap and adapted to gauge thread.

[rocket1]

Sponsored Links (Register now to hide all advertisements)

Older plugs come in 2 parts great for compression check or welding an eyebolt for engine removal.