Re:

[LSAPEX@aol.com]

A leak down tester would be ideal, but my compression gauge hose fits my air 
line coupler. Be sure to use a regulated line with low pressure.

Les.

<< I plan to find out why I have low compression in one cylinder of my 
Triumph.
 What would be a good plan for making (buying) an adaptor
 to pump compressed air into my spark plug holes?
 I wish to listen for leaks.
 
 Can I bust up a spark plug and tap it for 1/4 npt? >>