Compression Tester

[Stillrunning]

I purchased one from Auto Zone for around $25.00 and use it often. I keep a log of the compression of all cyl. and check the compression several times a year. Most engine failure is do to a clogged jet which causes it to burn up the cyl. By checking several times a year if you notice a drop in a cyl you can correct the problem before it does too much damage.