I noticed on my compression tester it actually has a Schrader valve at the very tip end of the hose right where it screws into the spark plug hole as well as a pressure release at the gauge so I think I'm getting a good reading as is. Don't you?
I noticed on my compression tester it actually has a Schrader valve at the very tip end of the hose right where it screws into the spark plug hole as well as a pressure release at the gauge so I think I'm getting a good reading as is. Don't you?
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