Engine Cooling System (Gx): Maintenance Honda Civic GA

Engine Coolant Refilling & Bleeding

Scheme 21

Scheme 22

Scheme 23

Scheme 24

1. Slide the heater temperature control lever to maximum heat. Make sure the engine and radiator are cool to the touch.
2. Remove the radiator cap.
3. Loosen the drain plug, and drain the coolant.
4. Remove the drain bolt from the cylinder block.
5. Apply liquid gasket to the drain bolt threads, then reinstall the bolt with a new washer and tighten it securely.
6. Tighten the radiator drain plug securely.
7. Remove, drain and reinstall the reservoir. Fill the tank halfway to the MAX mark with water, then up to the MAX mark with antifreeze.
8. Mix the recommended antifreeze with an equal amount of water in a clean container. NOTE: Use only genuine Honda antifreeze/coolant. For best corrosion protection, the coolant concentration must be maintained year-round at 50% minimum. Coolant concentrations less than 50% may not provide sufficient protection against corrosion or freezing. Coolant concentrations greater than 60% will impair cooling efficiency and are not recommended. CAUTION: Do not mix different brands of antifreeze/coolants. Do not use additional rust inhibitors or anti-rust products; they may not be compatible with the coolant. Engine Coolant Refill Capacity; [including reservoir]: 3.9 L (4.1 US qt, 3.4 Imp qt); [0.4 L (0.42 US qt, 0.35 Imp qt)]
9. Pour coolant into the radiator up to the base of the filler neck, and install the radiator cap loosely.
10. Start the engine and let it run until it warms up (the radiator fan comes on at least twice).
11. Turn off the engine. Check the level in the radiator, add coolant if needed.
12. Put the radiator cap on tightly, then run the engine again and check for leaks.

Scheme 25

1. Remove the radiator cap, wet its seal with engine coolant, then install it on the pressure tester.
2. Apply a pressure of 93-123 kPa (0.95-1.25 kgf/cm 2 , 14-18 psi).
3. Check for a drop in pressure.
4. If the pressure drops, replace the cap.

Scheme 26

1. Wait until the engine is cool, then carefully remove the radiator cap and fill the radiator with engine coolant to the top of the filler neck.
2. Attach the pressure tester to the radiator and apply a pressure of 93-123 kPa (0.95-1.25 kgf/cm 2 , 14-18 psi).
3. Inspect for engine coolant leaks and a drop in pressure.
4. Remove the tester and reinstall the radiator cap. NOTE: Check for engine oil in the coolant and/or coolant in the engine oil.