Fudge!!!

Kofla wrote: You can purchase a cheap borescope at Autozone, Home Depot, Wlamart, Amazon, etc. Some borescope cameras can be used attached to a smartphone.

You can rent the borescope at Autozone. The deposit is like $130 or something, but you get it all back when you return it.

Typically speaking the resolution isn't so hot on cheap bore scopes, but you should be able to see a bolt I would think. Also make sure the lens will get in your spark plug hole.

Rick H.

That's cheap, to bad the seller 97.4 rating