mk 2 1.6 driver, carb help

[golftyn]

hey, first post on this forum, now i know there are loads of post about the pierburg's but none seem to have the same problem. i have a mk2 1.6 golf driver, and when i came to turn the car on the other day, the revs shot up to about 3.5-4k (no rev counter) and ever since its virtually undrivable as the revs are so high i dont wanna blow the engine, i had a look and it appear the secondary chamber is stuck open, so i pushed it back in hoping it was just jammed, but that didnt work, so i took the vacum hose off to feel for suction, and there as nothing there, so i think the vacum has pack up, now eventually i will be swopping it with a weber, but for the time being a need a qiuck fix to get to work and back, so i  asked around and apparently i can use the vacum from the primary chamber and just buy a 2 way splitter, so i can run both chambers off the one vacum, only problem im having is finding the primary vacum and all the right hoses etc, ive only had the car a few weeks and is highly different to my capri engine LOL which i could take apart no problems lol.
any help would be cool,
cheers, 

[rubjonny]

It sounds to me like the 3/4 point unit on the lhs of the carb is stuck open, or has lost vacuum.  Check the 2 electrical valves on the back of the carb click when the ignition is switched on, and that they both get 12v.  If not, check your fuses

When the engine is off, the plunger on the 3/4 point unit should be stuck out about 14mm, then a few seconds after the engine is switched on it should retract to about 8mm.

See my pierburg FAQ post for more info on the various bits of your carb, and a nice diagram of the 2e2 which shows the 3/4 point unit