Doh...what I was understanding from my reading was that 1 and 4 operated together. One on an intake stroke the other on a exhaust. So 4 on exhaust would put 1 on compression...Anyway..compression testing kit will be home waiting for me. It should be a no brainer then. Watch the needle go up..done. right? Im doubting all my knowledge at this point..not that theres much...lol
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