Petrol 4.2 part number needed

[Mr_V]

Originally Posted by mannyo

You should be able to easily move the part at the other end of the bellows by hand against the spring pressure, if it does not move or is stiff then the intake manifold needs to be overhauled to get them working again. If you replace the plastic part without a correctly working part then it will just break again.

Thanks for that. I should have known it was a common problem.

They move albeit a bit stiff - I just thought it was the springs that were strong. On the Vauxhall v6 they open during a specific rev range to improve torque and iron out flat spots.

I wonder if my fuel economy would improve if these are working as designed? At the moment I am getting about 19-20 (17ish on LPG)

[M-A8]

Yeah, kit costs ridiculous money, they say its improved but still with plastic links.

This is how I solved my problem.

http://forum.a8parts.co.uk/showthread.php?t=8252

part here
http://www.gruvenparts.com/audi-vw-4...-linkage-arms/

Select A6/A8 V8 2inch

[Mr_V]

Originally Posted by M-A8

Yeah, kit costs ridiculous money, they say its improved but still with plastic links.

This is how I solved my problem.

http://forum.a8parts.co.uk/showthread.php?t=8252

part here
http://www.gruvenparts.com/audi-vw-4...-linkage-arms/

Select A6/A8 V8 2inch

Awesome - I think I'll take another look at the weekend and make sure they move freely then get some ordered.

[M-A8]

Yeah, make sure they do. There is a bit of tension so apply some pressure.
If they do then you laughing.
For less than half of still crap kit you will have links which will last a lifetime

[Mr_V]

Just ordered 1 inch links from gruvenparts.

I checked the movement on the inlet and it does appear that the springs are strong, as they move freely and snap shut easily.

[M-A8]

Are you sure your ones are 1inch???
I've got pretty much same engine and I've got 2inch ones

[Architex_mA8tey]

S8 ones are 1 inch and all the A8 ones are 2 inch I think.