Re: Johnson 5hp TD20 ignition timing facts & figures?

Home › Forum › Ask A Member › Johnson 5hp TD20 ignition timing facts & figures? › Re: Johnson 5hp TD20 ignition timing facts & figures?

April 22, 2015 at 2:08 pm #14493
frankr
Participant

    The last TN I owned had 60-ish compression, and would idle, but not like it should. We have to remember here, compression is only half the story, controlled mainly by piston rings & cylinder. Crankcase compression is the other half of the story, controlled mainly by piston skirts & fit as well as crankcase sealing.