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Computers and Control Systems > < Spark Plug Inspection|Page 3434
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Compression Check: Testing and Inspection

Normal 

The compression builds up quickly and evenly to the specified compression.

Leaking  

The compression is low on the first compression stroke. The compression builds up with the following strokes, but does not reach the specified
compression.

Computers and Control Systems > < Spark Plug Inspection|Page 3434