The Role of the Timing Belt
The timing belt controls the engine’s gas distribution system, ensuring proper exhaust and air-fuel mixture timing.
Factors affecting belt replacement interval:
-
Service life
-
Engine malfunctions
-
Improper installation or maintenance
Typically, belts are replaced as part of scheduled maintenance between 90,000–120,000 km (brand-dependent). However, failures can happen earlier.
Warning signs your belt may need replacement:
-
Age: Even with low mileage, rubber deteriorates over time (7–8 years).
-
Ignition issues: Belt wear can cause it to skip teeth, leading to misfires or failure to start.
-
Exhaust smoke: A loose belt disrupts combustion timing, causing incomplete burning.
-
Unusual sounds: Clicking or tapping may indicate wear.
-
Oil leaks: Especially from under the timing belt cover—often from crankshaft seals. Oil contamination requires full kit replacement.
-
Cracks or wear: Any visible damage is a sign for immediate replacement.
-
Starter turns but engine doesn’t fire: Could be a snapped timing belt.