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					Originally Posted by Texasdoc  The one I got was garbage. Broke after two uses. Couldn't see anything on the low-res screen anyway.
 
 
 Which one do you have?  I've been looking at these but wasn't sure how well they work.
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 I have one of "those" phone app scopes and it works fine, Camera FI as I remember the name. Here's a picture of my buddy's 68 Dodge Charger's camshaft where the fuel pump shaft rides. All pictures were taken through the fuel pump shaft hole.