strange metallic chi chi chi chi rattle on acceleration

[marky-gee]

from your sig i'm guessing its a 1997 mk3 2.0 8v

they pick up a  signal from a toothed wheel on the cranck that is non adjustable the dizzy is just used as a cam position sensor and adjustig it will throw it into lame mode.   so you cant adjust the timeing

but if you have a sensor fault the ecu will be getting the wrong infomation and applying to much spark advance.  knock sensors and airflow meter

very knowledgeable, thanks

as a matter of course what sensors would you guys change and what are the locations ?

i would be changing these through the course of the restore anyway but i intend on running it for 6-8 months before stripping. and also before i spend £££$$$ on having the manifold gasket checked, if that is what is found to be faulty in the end.

cheers for all the input again guys !!!

[AudiA8Quattro]

As Danny said, spark timing is calculated by the ecu.
Turning the dizzy manually will not help.
If you think the timing is wrong, all you can do is set the static timing marks.

[Wayne]

As Danny said, spark timing is calculated by the ecu.
Turning the dizzy manually will not help.
If you think the timing is wrong, all you can do is set the static timing marks.

Thanks for the info, I stand corrected 

[danny_p]

knock sensors live on the frount of teh engine block between cyls 1-2   and 3-4   there black bosh things  fixed by one bolt through the middel that must be 20nm

if there knackerd agg ect will pink like hell on 95 octane fuel after a while, 97 will normaly stop it,  airflow meter is between airbox and inlet manifold in the big black pipe

[marky-gee]

Quick update:

Im taking a gamble on it being the exhaust manifold gasket, so its being done next week ,OCD or what !!

[sharki786]

any luck? mine turned out to be the 1st and 4th exit on the manifold its still doing it  im getting mad now but has improved alot thoe

[marky-gee]

any luck? mine turned out to be the 1st and 4th exit on the manifold its still doing it  im getting mad now but has improved alot thoe

it's in at vw 2morro, fingers crossed, I've also ask them to do the mani-downpipe gasket.

[sharki786]

you taking it there???  how comes? sure you couldav done it yourself with some help? (thats if you know what your doing)

[marky-gee]

you taking it there???  how comes? sure you couldav done it yourself with some help? (thats if you know what your doing)

I work away mon-fri and my company get good discounts at the local stealers,it's handy to as they will pick it up, fix it,wash+Hoover it and drop it back off,LOL

[marky-gee]

UPDATE:

I had the manifold gasket, downpipe to manifold gasket and inlet gaskets renewed today and the dam thing is still doing it.

so back to square one as they say.