Please listen

[dwhitaker]

Hi, can you listen to this recording of my engine, and tell me if the tapping noise is a TADS situation or something else? Good compression, starts well, goes well. Can't feel any blow near the exhaust manifold - I had a similar noise on an chim and it was exhaust manifold blowing.

I thought it might be injectors, but a bit loud.

https://onedrive.live.com/redir?resid=340978440BB7...

The tap seams to be at about 1/3 to 1/2 rpm (about 5 ish times per second)

I don't have anything to compare with. Best guess at the moment is either injectors firing, which would be 1/2 rpm, or a slight blow from one exhaust manifold port, which would also be every other revolution.

Thanks in advance.

[dwhitaker]

Yes, sounds like a tappet to me too, though I have set them all a couple of weeks ago. That's why I was thinking exhaust blow - which can make exactly the same noise if up against the head as on my chim, or injectors. Anyway, does not sound serious, picks up OK and everything else seems fine.