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Cold start clicking isn't necessarily the spark plugs' fault. It can come from several things - first off, when it's cold, engine oil gets thicker and that can create friction noises. Spark plugs are more about combustion quality, so if they're worn you'll have trouble starting or jerky operation, but not really a typical metallic clicking sound. That noise sounds more like knocking or pinging in the engine.
Before changing the spark plugs, I'd do a quick check: try to verify your oil level and condition first, because oil that's too old or too low can really cause weird noises. Also check if it's a noise that goes away once the engine warms up - if that's the case, it's usually related to oil viscosity or normal engine play when it's cold. The spark plugs though, you can check their condition (look for corrosion or deposits) and change them if they look really worn, but I wouldn't start there.
If after changing the oil or after warming up the engine the noise persists and gets worse, then you really need to have someone check the bearings or engine play. But a little clicking at cold start is rarely alarming, especially if it goes away quickly.
No need to change the spark plugs right away, it's rarely the culprit on cold start. The clicking you're hearing generally comes from the oil thickening in cold weather (as mentioned before), or straight-up normal mechanical play in the engine when the parts warm up - it goes away after a few seconds of driving and it's not alarming.
That said, if the clicking persists even after the engine warms up or it gets worse over time, then you should get the spark plugs checked or have the overall engine condition looked at, because that's a sign something's wrong. Have you tried seeing if it keeps happening after it warms up or if it's just on the initial start?
reveur_lucas asker
Yes, it's just at cold start, it disappears after a few seconds. Thanks for the explanation.
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