OneZero

Member

• Nov 11, 2021

• #1

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

Member

• Nov 11, 2021

• #2

Here's another video at idle

 

kevstar

Well-Known Member

Full Member

• Nov 11, 2021

• #3

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

 

OneZero

Member

• Nov 11, 2021

• #4

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

 

H

Hicap phill

Well-Known Member

• Nov 11, 2021

• #5

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?

Click to expand...

Bit of flour or talc helps
If it’s the gasket it’s not a hard job

 

OneZero

Member

• Nov 11, 2021

• #6

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

Well-Known Member

• Nov 11, 2021

• #7

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!

Click to expand...

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