What is your level of experience with older cars? And do you know roughly the build level of your engine (compression)?
Because it sure fits every condition of pre-combustion knock and ping, and if it's really bad, it could totally sound like a spinning thing is hitting a stationary thing.. Could be caused by a variety of things: High compression (from engine build or carbon build-up), ignition timing off, or distributor advance not working properly.
Is this a new thing? Or has it been going on for a while?
Where in Indiana?
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-Matt I ♥ my ♂
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