Mustang Cobra V8-4.6L DOHC VIN V (2000)
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This can be identified by melted electrodes and possibly a blistered insulator. Metallic deposits on the insulator indicate engine damage.
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Install a new spark plug.
9. Inspect for overheating.
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This may be identified by a white or light gray insulator with small black or gray brown spots and with bluish-burnt appearance of the
electrodes.
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This can be caused by engine overheating, wrong type of fuel, loose spark plugs, too hot a plug, low fuel pump pressure or incorrect ignition
timing.
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Install a new spark plug.
10. Inspect for fused spot deposits.
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This can be identified by melted or spotty deposits resembling bubbles or blisters.
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This can be caused by sudden acceleration.
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Clean the spark plug.
INSTALLATION
1. Adjust the spark plug gap as necessary.
2. To install, reverse the removal procedure.
