Rough idle when warm?

[pullafacial]

Will try this when I get home.

What exactly am I looking for whilst doing this?

[Gambit]

with the car fully up to temp & idling, you spray wd40 down round the injector SEALS, if they are leaking, you will clearly hear the engine note change

that tells you you have unmetered air getting in, and will not be able to set the car up to idle correctly EVER!

you are spraying the wd40 (with the straw!) down where the injector goes into the head - so down between 17 enters the head, and 19. obviously you do the 4 injectors

[Gambit]

then once you are certain your injector seals are grand. (Also check the throttle body boot for cracks)

set about setting it up

timing
http://www.golfgtiforum.co.uk/index.php?topic=56707.0
co%
http://www.golfgtiforum.co.uk/index.php?topic=22031.0

[pullafacial]

Cheers Gambit.

I've just tested the injector seals with wd40 as you described.
I think they're ok but it's hard to be sure as the engine is so lumpy and hunts when warm.

I've also taken the air box and connecting pipes apart to check for leaks/blockages etc.
I did find a blockage in the pipe that runs from the front of the engine to the air box but this made no difference.

Bloody thing runs fine when it's cold but gets worse the hotter it gets!
I want to set the co2 but can't find an Allen key long enough. Grrrrr!

[Gambit]

Nah even if it was lumpy youd still hear the note change.

Did you pull the 5th injector connector of when it was up to temp and running?

You defo need to get hold of co% adjustment tool

[pullafacial]

Yeah I've left that disconnected for now as other than taking a bit more starting from cold, it runs the same with it disconnected.

[pullafacial]

Also, when I took it all apart earlier, there's a bit I'm not sure I refitted correctly.
There is an elbow pipe that comes out of the back of the airbox that goes into a device with an electrical connector then connects back to the main bit of pipe that goes to the throttle body.

It seems it can be connected either way round? Not sure if there is a right or wrong way but it seems to make no difference!

Thanks again

[Gambit]

Thats the overrun valve. There should also be a vacuum pipe running of it to the diaphram which is on back left corner of airbox

the bit with the black pipe on it goes into the airbox. The silver thing is the diaphram

[pullafacial]

So yesterday morning it took off the over run cut off valve and cleaned it out with petrol.
It doesn't seem to fit very well stressing the connecting pipes when in place so I wonder if its leaking air and if that would cause my fault?

I also fitted new spade connectors to the temperature sensors but still no joy!

One thing I did notice on the coil is that there seems to be a spade connector fitted to one of the terminals with no wire coming out of it? I'll try and post a pic...

 Another question I have is there seem to be another sensor just behind the dizzy. The wiring to that has been tampered with, would you be able to confirm the colour of the wires that should be connected to that?

[pullafacial]

Here's a pic of the coil...