- New oil pump and housing gasket.
- A full set of metric tools (including deep sockets and ratchets).
- A floor jack and jack stands.
- A large oil drain pan.
- A funnel and new motor oil.
- Clean rags and a scrub brush.
- Safety glasses.
1. Prepare the Vehicle:
- First, park the vehicle on a flat surface, apply the parking brake, and let the engine cool down completely.
- Disconnect the battery's negative terminal to prevent any electrical incidents while working.
- Jack up the vehicle and support it securely using jack stands. Make sure the vehicle is stable before proceeding.
2. Drain the Oil:
- Place the oil drain pan underneath the oil drain plug.
- Locate and remove the oil drain plug, allowing the old oil to drain completely.
- Replace the oil drain plug securely once the oil has drained.
3. Remove the Oil Pan:
- Loosen all the bolts holding the oil pan in place, except for the last bolt. Be cautious not to drop any of the bolts into the oil pan.
- Tap the oil pan gently with a rubber mallet to loosen any remaining sealant.
- Carefully remove the oil pan, being mindful of any residual oil or debris.
- Clean the oil pan and the mating surface on the engine thoroughly.
4. Remove the Old Oil Pump:
- Locate the oil pump and disconnect any hoses or electrical connectors attached to it.
- Remove the bolts securing the oil pump in place.
- Carefully remove the old oil pump by pulling it straight out.
5. Install the New Oil Pump:
- Apply a thin layer of sealant to the mating surface of the engine block.
- Position the new oil pump into place and secure it with the bolts.
- Reattach any hoses or electrical connectors that you disconnected earlier.
6. Install the Oil Pan:
- Apply a thin layer of sealant to the mating surface of the oil pan.
- Position the oil pan and secure it with the bolts.
- Tighten the bolts evenly and securely.
7. Add New Motor Oil:
- Remove the oil filler cap and use a funnel to add fresh motor oil according to the manufacturer's recommendations.
- Check the oil level using the dipstick and ensure that it is between the "full" and "add" marks.
8. Start the Engine and Check for Leaks:
- Reconnect the battery's negative terminal.
- Start the engine and let it run for a few minutes.
- Check for any oil leaks underneath the vehicle.
- If there are no leaks, turn off the engine and allow it to cool down.
9. Lower the Vehicle:
- Carefully lower the vehicle from the jack stands and place it back on the ground.
Your 1995 Mazda Millennium 24-valve should now have a new oil pump installed. Remember, if you feel unsure about any step, it's always best to consult a qualified mechanic or refer to the vehicle's specific repair manual for detailed instructions.
