Tried other bits and its still crap

[audiman]

Today an S2 came to the workshop and I asked the owner if I could borrow some bits to try!! Fancy the chances of that are slim i thought, but the owner said thats fine!!

tried his ECU, no change
tried his MAF, no change
tried another coil, no change

back to the drawing board.

I am gonna seal off the dump valve to see if boost if leaking past this, but i have tried two different ones and the prob was still there.

Its black smoking like hell when the pedal is pushed, followed it with my dad driving today. Proper *******.

[Mark Halligan]

Tom,

I know I'm probably not much help but it sounds (to me) with the black smoke, like a BIG boost leak or a fuelling problem, I can't remember if you have tried testing the system or not for leaks, I know Doug did it like this:

http://www.s2forum.com/forum/showthread.php?s=&threadid=530&highlight=ragu

If its not a leak or your MAF what else can effect the fuelling under load

Hopefully it will turn out to be the DV?

Mark.

[audiman]

Cheers mark, although i have removed and checked the hoses, i am no gonna go to work today and fire 30psi into the engine i have a can of leak detection spray to help me.

Thats it, time to get serious, bumper off the check the markH IC mod the lot.

Im getting well pissed off.

[audiman]

I feel like a complete tw@!!!

I pulled the whole front end apart today in search of a problem. I bypassed the WGFV by running straight to the wastegate. Still had the problem.

So then i thought, right time to pressure test the lot. So i fitted into the system a tyre valve. stuck the inflater onto it and pumped away. After spraying loads of leak detection spray around i could see the prob. The accordian sytle hose has a split about 1" long in it underneath one of the rings. I had check this hose and cos it was new never really looked that hard. Must have missed it!!

I bought a new one in Feb this year, so my local dealer will be having a phone call in the morning. All parts carry a 2year warranty, parts and labour. But i just want the part!! I think they may whinge if they saw the car setup!

Sorry to have racked so many of your brains. Im going to the pub to drown myself in beer.

[Doug_RS2]

What hose? I thought you had a custom MAF to Turbo inlet hose?

[audiman]

3b is different. IC to inlet pipe!! Need an ABY one to get rid of the accordian style hose.

[gillm]

lol told ya all along it was a leak coming from the front anyway enougth piss takin glad you found it proper bo !!!!!!!!!!!

[newsh]

When you said about it being rich I felt sure it was a leak.. I replaced my IC to Inlet hose with a piece of reinforced silicon rubber tube, stretchy enough to work for the 2 different diameters.

Glad you found the problem at last, no need to torch it now

[audiman]

Yeah i know i said it wasn't a boost leak!! Only reasoning i have is that the hose is not very old, so i never looked at it hard, plus the fact that the last time it went it gave fault codes. Which it never has this time?? Weird.

[A6 AVANT]

Glad you found it, hope she runs sweet when you have fixed her!
Have one for me
Better get a brickie in to fix that wall!!!

[audiman]

I did a temp repair that lasted for about 15 seconds!! Funny that at 1.8 bar!! But it went like fu*k. Now i remember what it was like, gonna have to wait until tuesday for a new pipe