Cooling System: Service and Repair

ENGINE COOLANT REFILLING AND BLEEDING

For best protection, mix anti-freeze with an equal amount of water (50 percent concentration) in a clean container prior to starting the bleeding procedure.
1. Set heater temperature lever to maximum heat.
2. Remove radiator cap and drain plug, then drain cooling system.
3. Install radiator drain plug and tighten securely.
4. Remove, drain and reinstall coolant reservoir. Fill reservoir to MAX mark with coolant mixture.

Fig. 51 Cooling System Bleed Points. 1990-92 Accord & 1992 Prelude:

Fig. 52 Cooling System Bleed Points. 1989 Accord:

Fig. 53 Cooling System Bleed Points. 1989-91 Prelude:

Fig. 54 Cooling System Bleed Points. Civic & CRX:

5. Loosen air bleed bolt in water outlet, then fill radiator to bottom of filler neck with coolant mixture, Figs. 51 through 54.
6. Tighten bleed bolt to specifications as soon as coolant starts to run out in a steady stream, without bubbles.
7. With radiator cap off, start engine and allow cooling fan to cycle twice.
8. If necessary, add more coolant mixture to keep coolant level at bottom of filler neck.
9. Install radiator cap and check cooling system for leaks.