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Idle Injector Ticking Noise Not Smooth


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Hey guys, see attached recorded video. anyone know why the injectors sound like this? The ticking noise interrupts here and there. It starts sound like this passed few days. The car run normal. Should I worry about it?

The car is a 2012 IS250 fsport. My dealer replaced knocking cam gears a year ago.

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Well it's not the *tick tick* noise that's bother me, I'm used to it (it's not loud when the bonnet is closed). If you listen carefully you can hear the tick tick noise interrupts and then continues. It has never sound like this before. It's very noticeable when you stand close to the car. Don't know if I should be worried.

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how does the car perform ?

How is the sound at exhaust during idle ? Any video of that?

rpm needle video?

The car seems perform normal. Rpm is steady and exhaust is normal too. It's just the injector sound come and goes. And this happens when idle rpm settles after a cold start and when the car is stationary.

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