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Step 1
Look under the hood of the vehicle before washing the exterior of the car to find areas where grease, dirt and other gunk build up on the different components of the engine. You may also notice a bad smell when you are either inside or under the hood of the car.
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Step 2
Gather the products you will need to detail the engine. This should include an engine degreaser, hose or pressurized water source, a rag and some chrome polish or wax. Take the time and spend the money to get good quality products from your local auto parts store. The products used at car washes are often on the lower end of the quality scale.
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Step 3
Spray degreaser all over the engine, allowing it to sit for a few moments. Use a hose or other pressurized water source and spray off the entire engine, removing the degreaser and with it the grease, dirt and other build up. Make sure to climb in and get the hard-to-reach areas as well. Consider climbing under the vehicle to spray out the underside of the engine.
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Step 4
Use a rag to wipe of any engine parts that are chrome or after-market metals and materials. Dry them thoroughly, as chrome spots easily from the water. Use a soft cloth to apply polish or wax to the chrome parts, then use a different cloth to wipe off the polish or wax before it dries completely.
