tapping noise at idle

Z_ealot · 11-08-2017, 04:03 PM

Quote:

Originally Posted by Dreadnaught

Hey op, is the noise coming from the back of the right side cylinder head? I can't view the video at work.

Seems to switch from right to left sometimes, but yeah most often from the top right of the rear of the engine

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Dreadnaught · 11-08-2017, 04:22 PM

Quote:

Originally Posted by Z_ealot

Seems to switch from right to left sometimes, but yeah most often from the top right of the rear of the engine

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When I first got my Z I heard a tapping coming from the rear of the right side head. I thought I had a valve train issue. It turned out to be purge control valve. That's what you may be hearing. I could hear it if I was standing on the left side of my engine bay but it was a little more quiet. You can put your finger on it and feel it pulsating for every tap.

I think if it was an oil pressure issue you would possibly have advance and retard issue for the intake cam since they are driven by oil pressure.

Hope this helps, I can only do so much over the interwebs.

Z_ealot · 11-08-2017, 05:17 PM

Quote:

Originally Posted by Dreadnaught

When I first got my Z I heard a tapping coming from the rear of the right side head. I thought I had a valve train issue. It turned out to be purge control valve. That's what you may be hearing. I could hear it if I was standing on the left side of my engine bay but it was a little more quiet. You can put your finger on it and feel it pulsating for every tap.

I think if it was an oil pressure issue you would possibly have advance and retard issue for the intake cam since they are driven by oil pressure.

Hope this helps, I can only do so much over the interwebs.

That might explain the fuel odors I’ve been smelling then if it is the purge valve lol

Just to clarify though, is it the pcv valves at the front if the engine you’re talking about or the actual purge valve on the canister? Cause i replaced pcv with new oem like a month ago

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