Re: [T3] Need help with engine problem diagnosis

[Steven Ayres <comwest@att.net>]

<x-flowed>NormanR=> a noise that sounded like flapping loose sheet metal. ...
=> like something rattling around in the engine case ...
=> Thinking it could be backfiring ...
=> very intermittent at idle ... happens frequently under load.
=> Could it be a short arcing?

The various possible sources you have listed all sound quite different, 
so it is not easy to focus in from your description. I guarantee it is 
not a loose rod or busted bearing, that would be unmistakeable. A piece 
of metal in the sump would not fly around in the case, it would just 
fall to the bottom

Use the long-screwdriver-in-your-ear trick to locate the source of the 
noise. Postignition (what most people refer to as backfiring) will be 
loudest at the exhaust manifolds. A loose screw in the fan will show up 
at the fan housing.

Steven Ayres, Prescott AZ
66 Big Ghia

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