Changing Engine Coolant
Changing Engine CoolantWARNING:
^ To avoid being scalded, do not change engine coolant when engine is hot.
^ Wrap a thick cloth around radiator cap and carefully remove the cap. First, turn the cap a quarter of a turn to release built-up pressure. Then turn the cap all the way.
^ Be careful not to allow engine coolant to contact drive belt.
DRAINING ENGINE COOLANT
1. Open radiator drain plug (1) at the bottom of radiator, and then remove radiator cap.
^ <---: Front
When drain all of engine coolant in the system, open water drain plug on cylinder block.
CAUTION:
^ Perform this step when engine is cold.
^ Do not spill engine coolant on drive belt.
2. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Follow the "FLUSHING COOLING SYSTEM" procedure.
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed.
2. Install radiator drain plug.
^ If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-76. Disassembly and Assembly
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring.
3. Make sure that each hose clamp has been firmly tightened.
4. Remove air duct assembly.
5. Disconnect heater hose (1) at position (<---) as shown.
^ <---: Front
^ Reposition heater hose as high as possible.
6. Fill radiator and reservoir tank to specified level.
^ Pour engine coolant through engine coolant filler neck slowly of less than 2 l (2 1/8 US qt, 1 - 3/4 Imp qt) a minute to allow air in system to escape.
^ Use NISSAN Genuine Engine Coolant or equivalent mixed with water (distilled or demineralized). Fill cooling system to specification.
^ When engine coolant overflows disconnected heater hose, connect heater hose, and continue filling the engine coolant, if heater hose is disconnected.
7. Install radiator cap.
8. Install air duct assembly.
9. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000 rpm.
^ Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat the engine.
10. Stop engine and cool down to less than approximately 50°C (122°F).
^ Cool down using fan to reduce the time.
^ If necessary, refill radiator up to filler neck with engine coolant.
11. Refill reservoir tank to "MAX" level line with engine coolant.
12. Repeat steps 6 through 11 two or more times with radiator cap installed until engine coolant level no longer drops.
13. Check cooling system for leaks with engine running.
14. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000 rpm with heater temperature controller set at several position between "COOL" and "WARM".
^ Sound may be noticeable at heater unit.
15. Repeat step 14 three times.
16. If sound is heard, bleed air from cooling system by repeating steps 6 through 11 until engine coolant level no longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank if removed.
2. Install radiator drain plug.
^ If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-76. Disassembly and Assembly
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring.
3. Fill radiator and reservoir tank with water and reinstall radiator cap.
4. Run engine and warm it up to normal operating temperature.
5. Rev engine two or three times under no-load.
6. Stop engine and wait until it cools down.
7. Drain water from the cooling system.
8. Repeat steps 1 through 7 until clear water begins to drain from radiator.