Toyota Estima Cold Start “Kok Kok” Sound? Watch Out – It’s Not Normal

alp_specialist

Recently came across a few Toyota Estima
with “kok kok kok” sound during cold start.

After a few minutes, the sound disappears —
many think it’s fine. But it could be a sign of a loose or worn Balance Shaft.

Cold engine = metal doesn’t fit properly → knocking sound.
Hot engine = metal expands → sound gone (temporarily).

Common Signs:

✔ Knocking sound during cold start
✔ Sound lasts 2–5 seconds then stops
✔ Engine shakes slightly
✔ Already changed alternator / bearing — still noisy

⚠️ What Can Happen:

✘ Sound gets worse over time
✘ Engine vibration increases
✘ May cause internal engine damage if ignored

Want to check? You can PM or contact for details.

- MD AUTO TOYOTA | LEXUS SPECIALIST MALAYSIA

- www.toyotalexuspro.com
- www.wasap.my/60165243231

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