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How does a pinging engine sound? Everytime I accelerate on the highway I can hear a rattle sound from the engine, or catalic converter area. Kind of sounds like nails hitting the cats. Is this my engine pinging. It has been doing it for the past 3000 miles. With different grades of gas.

Chris
 

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It could be. I would pull the plugs and see what condition they are in. They should be pale white to tan color. My OE plugs in my 01 Cobra were burnt up after 9k miles. The insolators were red and black. The tips had little metal balls on them. :eek: :barf:
 
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