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April 1, 2000 Service bulletin

Exhibiting a crackling / popping noise from the exhaust

Ford technical service bulletin 8021 for 1999-2000 Ford F-150, 1999-2000 Ford Expedition and 1999-2000 Ford F-250 and others.

Bulletin number
8021
Component
Engine and engine cooling: exhaust system
Summary
Exhibiting a crackling / popping noise from the exhaust. Mr

Owners of these vehicles have filed 980 complaints in the engine category.

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