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Mazda 3 L4-2.0L (2007)03 · Maintenance
03 · Maintenance

Coolant: Testing and Inspection (page 3 of 3)

Make
Mazda
Model
3
Engine
L4-2.0L
Year
2007
Section
Fluids › Coolant
MaintenanceTesting and Inspection · page 3 of 3
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Caution:
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If the water temperature gauge rises too high, stop the engine and decrease the water temperature to prevent overheating. Then,
verify the malfunctioning part and repair or replace it.

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If the engine coolant level in the coolant reserve tank is below the MIN mark during engine coolant air bleeding operation, stop the
engine, and after the engine coolant temperature decreases, add engine coolant. Then, resume the engine coolant air bleeding
operation.

10. Start the engine and idle it until the thermometer indicator is in the center when the engine is at below 1,500 rpm.
11. Bleed the air by following the procedures below. At this time, be careful of the coolant temperature to prevent overheating.

Note: If the accelerator pedal is depressed continuously for a specified time, the engine speed may decrease to the idle speed. This is due to the
fuel cut control operation, which prevents overheating, and it does not indicate a malfunction.

(1) Run the engine at 2,500 rpm for 2 - 3 min, 2 times.
(2) Run the engine at 3,000 rpm for 5 s, then idle.
(3) Repeat steps (1), (2) twice.

12. Stop the engine, and inspect the coolant level after the coolant temperature decreases (water temperature gauge indicates 'C' or less).
13. Check the coolant level.

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If it is low, refill the coolant into the coolant reserve tank up to the MAX mark on the tank.

14. Inspect for engine coolant leakage. (See ENGINE COOLANT LEAKAGE INSPECTION [LF, L3].) See: Engine, Cooling and Exhaust/Cooling

System/Testing and Inspection/Initial Inspection and Diagnostic Overview

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Parts & tools for this job For 2007 Mazda 3 2.0L

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