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Here’s a step-by-step guide to help you through the process:

### Tools and Materials Needed:
– Safety glasses and gloves
– Jack and Jack stands
– Lug wrench
– Socket set (including a torque wrench)
– Spring compressor (highly recommended for safety)
– Rubber mallet or hammer
– Pliers
– New coil spring (if replacing)
– New strut assembly (optional, depending on your needs)

### Steps to Replace a Coil Spring:

#### 1. **Preparation:**
– **Safety First:** Wear safety glasses and gloves to protect yourself.
– **Gather Materials:** Make sure you have all your tools and the new coil spring ready.

#### 2. **Lift the Car:**
– **Loosen Lug Nuts:** Before lifting the car, use the lug wrench to slightly loosen the lug nuts on the wheel where you’ll be replacing the coil spring (usually the front).
– **Jack Up the Car:** Use the Jack to lift the car off the ground. Make sure it’s on a flat surface.
– **Secure with Jack Stands:** Place Jack stands under the car for safety. Never work under a car only supported by a jack.

#### 3. **Remove the Wheel:**
– **Take Off the Lug Nuts:** Now that the car is secure, fully remove the loosened lug nuts and take off the wheel.

#### 4. **Access the Strut Assembly:**
– **Locate the Strut:** The coil spring is part of the strut assembly. Find the strut assembly connected to the lower control arm.
– **Remove the Lower Strut Bolt:** Use the socket set to remove the bolt connecting the strut to the control arm. A rubber mallet can help if it’s stuck.

#### 5. **Remove the Strut from the Car:**
– **Unscrew Top Bolts:** Inside the Engine bay, remove the bolts securing the top of the strut. There may be 3 or 4 bolts, depending on your model.
– **Take Out the Strut Assembly:** Once the bolts are removed, gently pull the strut assembly away from the car. Be careful as the coil spring is under tension.

#### 6. **Compress the Coil Spring:**
– **Use a Spring Compressor:** This is a crucial step for safety. Place the spring compressor on the coil spring and compress it evenly. Follow the tool manufacturer’s instructions carefully.
– **Ensure Safety:** Make sure the spring is securely compressed before proceeding.

#### 7. **Remove the Old Coil Spring:**
– **Unscrew the Top Nut:** With the spring compressed, use a socket to remove the nut at the top of the strut that holds the coil spring in place.
– **Take Off the Coil Spring:** Once the nut is removed, you can carefully take off the coil spring from the strut.

#### 8. **Install the New Coil Spring:**
– **Position the New Spring:** Place the new coil spring onto the strut, ensuring it sits correctly in its seat.
– **Reattach the Top Nut:** Secure the coil spring by screwing the top nut back on while still using the spring compressor.

#### 9. **Reinstall the Strut:**
– **Place the Strut Back in the Car:** Position the strut assembly back into the car and secure it by reattaching the top bolts in the Engine bay.
– **Reconnect the Lower Strut Bolt:** Reconnect the lower strut bolt to the control arm and tighten it properly.

#### 10. **Reattach the Wheel:**
– **Put the Wheel Back On:** Place the wheel back on and hand-tighten the lug nuts.
– **Lower the Car:** Carefully remove the Jack stands and lower the car back to the ground.

#### 11. **Tighten the Lug Nuts:**
– Once the car is back on the ground, use the lug wrench to tighten the lug nuts securely. It’s best to do this in a crisscross pattern.

#### 12. **Final Checks:**
– **Check Everything is Secure:** Make sure all bolts are tightened and everything is in place.
– **Test Drive:** Take a short drive to ensure everything feels right and listen for any unusual noises.

### Important Notes:
– **Safety First:** Always prioritize safety when working on a car. If you’re unsure at any point, consider asking for help from someone experienced or taking it to a professional mechanic.
– **Follow Manufacturer Guidance:** Consult your vehicle’s service manual for any specific instructions or torque specifications related to your particular model.

By following these steps carefully, you should be able to replace the coil spring on your Subaru Impreza successfully. Good luck!
A pushrod is a crucial component in an internal combustion engine, particularly in overhead valve (OHV) designs. It serves as a mechanical linkage that transfers motion from the camshaft to the engine’s valves. In engines that utilize pushrods, the camshaft is typically located in the Engine block rather than in the cylinder head, which distinguishes them from overhead cam (OHC) designs.

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