[AT] Compression test on 7/8 inch plugs

[Richard Walker]

Here's a workaround that I made years ago and have used on many 
different engines - old tractors, trucks, chain saws, cars, etc.  Got 
the idea from a hot rod guy.

Cut an old plug above its hex.  Break out the innards.  Braze on a 
coupling and thread in a male air disconnect.  You can easily make up 
additional adapters for different plug sizes.

Slip off the rubber cone from your compression tester.  Find a length of 
rubber hose that is a tight slip fit over the tester end.  Attach a 
female air disconnect to the opposite hose end.

You'll need to slip the hose off the tester end each time you check a 
cylinder, to bleed off the pressure before the next test by depressing 
the tire valve inside the tester end.


-  Richard




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