How to Clean a Car Engine Inside
Tools and Materials You’ll Need
- Engine degreaser
 - Water hose or pressure washer
 - Garden hose nozzle
 - Scrub brush
 - Rags or towels
 - Gloves
 - Safety glasses
 - Mask (optional)
 
Safety Precautions
- Allow the engine to cool completely before beginning.
 - Wear gloves and safety glasses to protect yourself from chemicals and debris.
 - Avoid getting degreaser on your skin or in your eyes.
 - Work in a well-ventilated area.
 
Step-by-Step Instructions
1. **Apply Engine Degreaser**
 – Spray engine degreaser liberally over the engine, avoiding the alternator, battery, and electrical components.
 – Allow it to sit for 5-10 minutes to dissolve grease and grime.
2. **Rinse with Water**
 – Use a water hose or pressure washer to rinse off the degreaser and loosened dirt.
 – Be sure to rinse thoroughly, as any remaining degreaser can damage the engine.
3. **Scrub with a Brush**
 – Use a scrub brush to remove any remaining dirt or grime.
 – Pay special attention to areas that are particularly dirty, such as the oil pan and valve covers.
4. **Rinse Again**
– Rinse the engine again with water to remove any remaining debris.
5. **Dry the Engine**
 – Use clean rags or towels to dry the engine as much as possible.
 – You can also use compressed air to help dry it more quickly.
6. **Check for Leaks**
 – Once the engine is dry, start it up and check for any leaks.
 – If you notice any leaks, tighten the bolts or hoses as needed.
Tips
- Use a garden hose nozzle with a spray setting to avoid damaging the engine with high-pressure water.
 - If the engine is particularly dirty, you may need to repeat the cleaning process.
 - Be careful not to get water on the electrical components of the engine.
 - Clean the engine regularly to prevent the buildup of grease and grime.
 
Conclusion
 Cleaning a car engine inside is a relatively simple task that can help improve its performance and longevity. By following these instructions, you can keep your engine running smoothly and looking its best.