Reply To: 1957 Big Twin Flywheel Cracks

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July 28, 2020 at 8:12 am #210129
Don
Participant

    US Member

    Yes, I would start with loosening the cap after running for a few minutes. Yes, this is not an accurate test, but a place to start. Surely there is a problem somewhere if there is no pressure build up after a few minutes of running….