Timing Belt Replacement: When It's Due and Why Skipping It Could Destroy Your Engine

Your car's timing belt is one of those parts you never see, but it's absolutely critical. This rubber belt keeps your engine's valves and pistons moving in perfect sync. When it fails, the results can be catastrophic – and expensive.

What Does a Timing Belt Do?

The timing belt connects your engine's crankshaft to the camshaft, ensuring the valves open and close at precisely the right moments. In interference engines (common in most modern cars), a broken timing belt means pistons can slam into open valves. The repair bill? Often R15,000 to R40,000 or more – sometimes it's cheaper to replace the entire engine.

When Should You Replace Your Timing Belt?

Most manufacturers recommend replacement between 60,000 km and 100,000 km, or every 4-6 years – whichever comes first. Here's a quick guide for popular South African vehicles:

• Toyota Corolla/Hilux (older models): 90,000 km
• VW Polo/Golf: 90,000-105,000 km
• Ford Ranger (2.2/3.2 TDCi): 150,000 km
• Hyundai i20/i10: 90,000 km
• Nissan NP200/NP300: 100,000 km

Note: Some newer vehicles use timing chains instead of belts, which typically last longer. Check your owner's manual or ask us if you're unsure.

5 Warning Signs Your Timing Belt Needs Attention

1. High-Pitched Squealing from the Engine

A worn or misaligned timing belt often produces a distinctive squealing or whining noise, especially on startup or acceleration.

2. Engine Misfires

If the timing belt has stretched or slipped, your engine's timing will be off. This causes rough idling, misfires, and poor performance.

3. Visible Cracks or Wear

If you can access your timing belt (or have a mechanic check), look for cracks, fraying, or shiny spots on the belt surface.

4. Oil Leaks Near the Timing Cover

Oil contamination can degrade the timing belt rubber faster. If you notice leaks near the front of the engine, get it checked immediately.

5. Engine Won't Start

If your timing belt has already snapped, the engine simply won't turn over. The starter motor will crank, but there's no combustion.

What's Included in a Timing Belt Kit?

A proper timing belt replacement should include:

• Timing belt – the main component
• Tensioner – keeps proper belt tension
• Idler pulleys – guide the belt
• Water pump – often replaced at the same time (it's driven by the timing belt)

At Ace Auto, we stock complete timing belt kits for all popular South African vehicles. Buying the kit is usually more cost-effective than replacing parts individually.

Don't Wait Until It Breaks

Unlike brake pads that squeal or tyres that wear visibly, a timing belt can fail without warning. The cost of preventative replacement (typically R2,500-R6,000 including labour) is a fraction of the engine damage a failure can cause.

Need a Timing Belt Kit?

Browse our range at aceauto.co.za or WhatsApp us on 083 737 7502 with your vehicle details. We'll find the right kit for your car at the best price.