what is the clicking noise coming from my 06 scion tc?

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Old 13 Dec 2013, 08:25 pm   #1 (permalink)
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Default what is the clicking noise coming from my 06 scion tc?

At first I thought it was a valve, but valve ticks are normally constant. The noise is only there when I apply gas, so under torque. It is coming from the passenger side. I took the valve cover off and there does not seem to be any issues with the timing chain, or valves, and I replaced the pcv valve. It doesn't make the noise while idling or when cold or under high rpm.
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Old 13 Dec 2013, 08:39 pm   #2 (permalink)
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Sounds like your low on oil which makes the valves tick, when you rev the engine oil pressure goes up and the valves get the right amount of oil so they don't tick.
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Old 13 Dec 2013, 08:55 pm   #3 (permalink)
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did you check your valve lash? if one is loose it may not feel loose to the touch. Also check your right front constant velocity joint or whatever they call them fwd jokes. sometimes if they are worn they will click on acceleration. take your car to a parking lot and just turn the steering wheel as far to the left and right , drive in tight circles and listen. Check and make sure the boot is not leaking. i mean it could be a valve tappet still. if you have a bad one they never get better and there's not much you can do about it but, a valve job. after you adjust them try some marvel mystery oil in the crankcase and the gas.
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