Please help me with this...

When I start up my disco, there is a loud clicking on the passenger side of the engine (thats where it sounds like its coming from.) It quiets down after a while, but gets really loud when I step on the gas.

Thanks for any input on what it is!



2004 Discovery II
110K miles

 

sounds like an exhaust leak

 

I second that audio diagnosis.

 

Is there any way to easily detect where that exhaust leak is, or should I go directly to the manifold gaskets.

 

I had a problem similar to this but not nearly as loud.

from what I understand usually the culprit is the manifold flange at the y-pipe. I did a seafoam treatment that showed me that was definitely leaking on mine and for some people simply tightening the nuts from the bottom fixed the problem but I went ahead and replaced the gasket on the passenger side.

My point was a seafoam treatment could show you were to start.

 

^^

That's a nice idea. The ultimate smoke test.

I also had a similar noise, but not as loud. Turned out to be an SAI issue.