Hi all.

Anyone heard this kind of noise?

Just taken off Prins LPG gas system and replaced lower inlet manifolds including new gaskets.

Now I am getting this horrid mechanical rattle anyone come across the noise?

Any help greatly appreciated.

Misfires seen on drivers side cyclinders 7 5 3

https://drive.google.com/file/d/1XnFVMnLXQ...p=drivesdk Range Rover Vogue SE 2007 L322 4.2 Supercharged 121k. Engine rebuilt @ 120666 Miles

Last edited by friskydog on 16th Aug 2025 9:02pm. Edited 1 time in total

So car has been sat now for a few weeks without moving as I was worried it might damage the vehicle keep running her. However started her today and had the noise clonking again. Ran it for a prolonged period and pushed accelerator to test. Took it for a gentle drive and god knows how but the clonking has completely vanished. I swear to god you have a relationship with these things more than you own them

So LPG now removed as said previously. Still seeing misfires on 1 bank currently cylinder 3 5 & 7.

Valve Recession seen as highlighted previously, I guess due to running LPG from when I had her re-shimmed. It didn't last long at all and I even had clearances extended to try and slow process down as well. Hey ho.

So looking to re-shim again but with no LPG running this time. I would just like to keep the ole beast.

However on the bright side the clonk has vanished. Fingers crossed for planned re-shim.

Anyone knows any top rebuilders near Birmingham please shout, thanks. Range Rover Vogue SE 2007 L322 4.2 Supercharged 121k. Engine rebuilt @ 120666 Miles