Engine Compression

Spectre1982 wrote: Checked the compression in my engine yesteday. My shop manual says the minimum should be 124 PSI and not deviate more than 14 PSI between cylinders. The spark plug in No. 1 cylinder looked a bit oily. The other three were normal. Here are the readings.

1 - 100 2 - 110 3 - 120 4 - 110

This set of numbers was taken after putting a little oil down the spark plug hole.

1 - 122 2 - 118 3 - 125 4 - 120.

What do I need to do to restore my compression? I'm hoping new rings is all I need. When replacing the rings do I buy a standard set?

Thanks.