tock-tock sound

[safe]

Hi
After changing my timing chains this winter I have the engine back in the car now and has driven 100 miles or so.

Now I have a tocking sound that I hear on idle.
I canīt say if I had it before the change, right after or if it has developed now when I have driven it.
My idle is quite low right now (500-600 rpm), it might be that because of that I here the sound. Its about 2 "tock" per second at 600 rpm.
I canīt tell from where in the engine it comes, its all over.
Any ideas?

[cstreit]

When is the last time you had a valve adjustment?

[safe]

I did an adjustment right before i put the engine back in.
My first, but I think I was very careful. Could I have set a valve to loose?

[cstreit]

It's the most likely culprit... You said you changed the timing chains, are you sure your valve timing was correct? How is the power delivery?

[safe]

Iīm pretty sure the timing is correct. The engine runs as good as before or better. It pulls strong from about 3500 to at least 5500 rpms.

[cstreit]

So if the cam timing is right, it pretty much rules out valves hitting pistons which is good. A loose valve will make a ticking sound, almost like a loud sewing machine...