Originally Posted by andrewwynn

I would def start there but also feel with your gloved hand.

https://apps.apple.com/app/id1089589547

I use this app for vibration measuring.

It will give you the vibration frequency which can determine if it's something that happens once per 720° (one cylinder power stroke issue) or 120° (every power stroke).

You can also hit a suspect like the cat and measure the Hz etc.


–awr–

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