Toyota Estima Engine Knocking Noise

Toyota Estima Engine Making “Kok Kok” Noise? It Could Be the Balance Shaft!

Do you hear a metallic knocking sound (“kok kok”) when starting your Toyota Estima, especially when the engine is cold?

 Many drivers think it's normal — but this could be an early sign of a worn or loose balance shaft.

Common Symptoms:

• Knocking sound on cold start

• Sound disappears after 2–5 seconds

• Slight engine vibration at idle

• Increased fuel consumption or poor performance

What Causes This?

The balance shaft is designed to reduce engine vibration.
Over time, its bearings may wear out, or the shaft may become loose.
This causes metal-to-metal contact, especially when the engine is cold and the parts haven't expanded fully.

 What Happens If You Ignore It?

• Knocking noise will get louder over time

• Engine vibration may become worse

• Could lead to internal engine damage, requiring costly repairs or overhaul

What You Should Do:

Get your Estima checked by a specialist workshop familiar with Toyota MPV engines
Early detection and repair can save you time and money
Don’t wait for the noise to get worse

MD AUTO TOYOTA LEXUS SPECIALIST MALAYSIA
Locations: Selayang & Petaling Jaya
WhatsApp: www.wasap.my/60165243231

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