What is it ?

[Frenchy]

Gents the little valve with 2 take offs behind the AMAL valve, mine is not plumbed in to anything, i noticed on a friends car that it is routed to the bottom of the throttle valve.
Also the pipe that runs from the J Boot to the hard pipes that leads to the AMAL valve is still connected on my car,Turbo with stage 2, Tial, chips etc
Was told it should be disconnected and plugged.

Advice appreciated.........as ever.

 

[sulzeruk]

Hi Jim, I think it is a thermostatic air bleed for when the car is cold. It is open when cold to help the fuel enrichment and get a bit of air in. Seen quite a few cars with the inlet blanked and some with it not there at all. Alasdair

 

[robwright]

Jim it is the thermostatic switch for cars fitted with fuel vapour purge system. At the correct temperature it opens a valve to feed petrol vapour from the tank through a charcoal filter in the passenger wheel arch. I think it then feeds back into the J boot, which on yours should have a blank on it if not fitted. AFAIK it was only fitted to very few cars around the 1987 era. If you have the switch it requires no feed or outlet as you don't have vapour purge. Many have elcted to remove it in the past as it just another source for boost leaks!!

 

[PSH]

ORIGINAL: robwright Jim it is the thermostatic switch for cars fitted with fuel vapour purge system.  At the correct temperature it opens a valve to feed petrol vapour from the tank through a charcoal filter in the passenger wheel arch.  I think it then feeds back into the J boot, which on yours should have a blank on it if not fitted.  AFAIK it was only fitted to very few cars around the 1987 era.  If you have the switch it requires no feed or outlet as you don't have vapour purge.  Many have elcted to remove it in the past as it just another source for boost leaks!!

I disconnected mine many years ago, still haven't got around to removing the filter though....lol Pete

 

[Frenchy]

Cheers Lads, So no use on my car then, the pipe i need to blank leads from the J boot to the AMAL valve, as i now run a Tial i believe this should be disconnected and blanked ?

 

[944 man]

Will all cars with a charcoal filter in the NS wheel well have this? Simon

 

[T3rra]

Iv got the filter fitted still but the vapour purge is delete. Iv changed the vacuum lines, but I didn't do the vapour purge delete. Mine go from the throttle body straight over to what I believe is the thermo vavle. The 2nd port is capped. Car is stock 250 don't no if that helps at all.