Thread: New Head, New Noise

No Idea but can't see the video.

Most likely an exhaust leak. The manifolds can be tricky to get sealed. Do you know what brand manifold gasket you used?

If you can't upload the video here (I can't see it either), put it on youtube and post a link here.

Tom.

Thanks for the advice. Here's a link to the video

YouTube

Well it's a rattle - not a bearing. Seems a little intermittent too - not necessarily going up and down with the revs. Perhaps @blknight might be able to help? Did you have the injector pump off? Are the front bolt (injector pump) tight? They can be checked by remove the timing cover/AC belt adjuster.

Tom.

Originally Posted by BathurstTom

Well it's a rattle - not a bearing. Seems a little intermittent too - not necessarily going up and down with the revs. Perhaps @blknight might be able to help? Did you have the injector pump off? Are the front bolt (injector pump) tight? They can be checked by remove the timing cover/AC belt adjuster.

Tom.

We haven't had the injector pump off. We will check the bolts anyway. I've messaged blknight so hopefully we can get an answer 😀

Originally Posted by Red90

Most likely an exhaust leak. The manifolds can be tricky to get sealed. Do you know what brand manifold gasket you used?

I don't know sorry 😬

Yours sounds different to what I had a little while ago, but it seems to be at idle, disappearing with a little bit of engine speed.
Does it happen if you hold revs at say 1000RPM?

Anyhow, mine was a deeper knocking noise, not a higher pitched tapping/clicky type sound.
Mine drove me mad as I pulled lots of stuff down, thought itwas power steering pump, then noticed the water pump pulley is slightly out of round(it's not, it's the alignment of the water pump flange!).
New exhaust manifold, pulled more stuff down. then saw the culprit one day with the fan off.
Stupid fan belt adjuster was hitting at full extension on it's rest stop. Only happened at idle, a few revs(eg. 900 or 1000RPM) smoothed out the rougher idle conditions and the belt didn't flex so much so that the adjuster didn't top out on itself.
So I thought it was a duff adjuster. Changed that zero difference!
Arrgghhhh!

What I did to test tho, was with fan off, engine idling and knocking, I used a socket to flex the adjuster a mm or so looser(not off, just less tight). So while it was idling, when it knocked, me having just a very small amount of pressure on the adjuster stopped the noise. I think it's a 15mm socket. BUT! you need to have the fan off.

Never thought that a standard supposedly correct sized serpentine belt would make such a difference, but this was the culprit. A $20 belt. Turned out that a new Gates belt wasn't exactly as specified in it's length specs.
Got a new belt of ebay(different looking Gates to what I got locally) came from the UK. See here for more details.
The older Gates belt I took off was still pretty new(less than 1K lms), just a few mm longer, which allowed the adjuster to fully extend and knock. Noise now gone.

From the sound tho, I'd say this (probably)isn't your issue, but check everything that doesn't cost you any $s.
Also, just in case you have this issue, you can see that the two bump stops on the adjuster will be touching on every clacking sound.
Don't rely on the static position of the adjuster/belt tho. Mine had a nice enough gap when stationary .. it was only at idle that it bounced about so much.

Can you get the fan off? if you have the tool, then another way to confirm this would be a video of the fanbelt/adjuster area.

Other things to check are the tightness of bolts for the fan pulleys, AC pulley(s) .. too.