SA says,
Quote:
4. Loose rockers all around – Adjusting valves is a part of routine maintenance with a solid lifter cam and our Owners Manual explains how to do it properly and if Don had done this, he might not have had any problems.
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Right there is where I get the 'loose valve' scenario, and I agree with SA, the installer/owner's responsibility to check and adjust. To loose could be a contributing factor to broken stud.