Where are spark plugs on 2002 ford E-250 cargo van?

On a 2002 Ford E-250 cargo van, the spark plugs are located on the engine's cylinder heads. For the V8 engine, you'll find them under the ignition coils, which need to be removed to access the spark plugs. If your van has a V6 engine, the spark plugs will still be found on the cylinder heads but may be positioned differently depending on the specific engine configuration. Always refer to the vehicle's service manual for detailed instructions on accessing and replacing spark plugs.