Re: Johnson 3HP JW-17 Compression woes

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July 20, 2018 at 3:24 pm #79774
David Stanton
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    To expand on what Frank said, If your compression gauge has the checkvalve up at the gauge after a length of hose, the volume of the hose can be significant to give you a lot lower reading on these small cylinders. I have one compression gauge like this that I don’tr use anymore for that reason. You want the checkvalve right at the cylinder.
    Dave