The timing chain keeps the engine’s crankshaft and camshaft(s) in perfect sync, ensuring valves open and close at the right time during combustion. Unlike timing belts, timing chains are made of metal and designed to last longer, but they can still stretch, wear, or fail over time. A failing timing chain can cause rough running, misfires, and, if it breaks, catastrophic engine damage. Replacing a worn timing chain restores precise engine timing and reliability.

What is a timing chain replacement?

This service involves removing the old or stretched timing chain and installing a new one along with tensioners, guides, and related components. Because the timing chain is located deep inside the engine, this is a complex and labour-intensive job.

Why do you need a timing chain replacement?

A worn or stretched timing chain can throw engine timing off, leading to poor performance, engine noise, or complete engine failure if it slips or breaks. Replacement ensures the engine continues to run smoothly and avoids costly repairs.

Common signs you need a timing chain replacement

• Rattling noise from the engine, especially on startup
• Check Engine Light illuminated with timing-related fault codes
• Poor engine performance or rough idling
• Engine misfires or difficulty starting
• Metal shavings in the engine oil (from chain wear)

What happens during a timing chain replacement?

A mechanic will:

1. Remove necessary engine components to access the timing chain
2. Inspect and replace the chain, tensioners, guides, and sprockets if needed
3. Reassemble the engine with new seals and gaskets
4. Refill with fresh oil and coolant as required
5. Test engine timing and performance

How much does a timing chain replacement cost?

Replacement typically costs $1,500–$3,500+, depending on the vehicle make and model. Labour is the biggest factor due to the complexity and time required to access the timing chain.

Is it unsafe to drive with a bad timing chain?

Yes. A failing timing chain can cause severe engine damage if it slips or breaks while driving. If you notice rattling noises, misfires, or engine performance issues, the chain should be inspected and replaced immediately.