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Old 02-08-2017, 04:38 PM   #3 (permalink)
nis350
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Join Date: Oct 2014
Location: socal
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Drives: 370z
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No code from the scanner, not even pending. My mechanic did say that the fuel trim indicated lean condition and we have reset the ecu, but condition didn't go away.

It is a fairly fast clicking sound accompanied by a slight engine vibration. Everything's back to normal once you lift the throttle and re-accelerate fine subsequently.

Quote:
Originally Posted by SouthArk370Z View Post
Get an OBD scanner and see if the ECM has thrown a knock DTC. If not, then I'm guessing that you are hearing something loose in the engine compartment that is rattling around and not engine knock.
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