300tdi Defender 110 - Another knocking noise question

OneZero · Nov 11, 2021

My 300tdi starting making a knocking noise after driving it for about 1 minute. As it warmed up, the noise got louder and more distinct. It's a compression sound, definitely not metallic even though it's hard to tell in the video. Any ideas?

OneZero · Nov 11, 2021

Here's another video at idle

kevstar · Nov 11, 2021

Sounds like its chuffing, cylinder head gasket down the back of the engine.??

OneZero · Nov 11, 2021

I was afraid it might be the HG...would I be able to feel any air coming out between the header and block?

Hicap phill · Nov 11, 2021

OneZero said:
I was afraid it might be the HG...would I be able to feel any air coming out between the header and block?

Bit of flour or talc helps

If it’s the gasket it’s not a hard job

OneZero · Nov 11, 2021

Just checked and I'm able to feel air pulsing out the back of the engine

Now to order a new HG. I'll look for some tutorials on the site. Thanks for the help!

neilly · Nov 11, 2021

OneZero said:
Just checked and I'm able to feel air pulsing out the back of the engine
Now to order a new HG. I'll look for some tutorials on the site. Thanks for the help!

Its not difficult , the rave manual helps a lot. Plus there are quite a few Youtube videos.

Cleanliness ,taking your time and getting the torques right.

I fitted the layered metal gasket.

Cheers

300tdi Defender 110 - Another knocking noise question

OneZero

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OneZero

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kevstar

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OneZero

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Hicap phill

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OneZero

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neilly

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