Hi all have now read this thread from the beggining makes very interesting reading, here is my situation, I have got an 82 300TD w123 in my care at the moment, I have been entrusted to convert it from a four speed manual to an auto, I fixed up the tranny which was a donor from an 81 sedan (we call them saloons on this side of the pond) put in new fluid, gasket and filter. I took the VCV from the 81 donor car (metal type) and put a new 3:2 valve on the cam cover, this car being european does not have an EGR setup is non turbo and does not have AC or climate control so a fairly simple setup, I have no vacuum leaks whatsoever in the rest of the vac circuit central locking, shut off etc is all on new hose and all the t-pieces and joining sections are also new, The line to the modulator holds vaccum when pumped from my hand-held vaccum pump, I bought all the orafices suggested here and have tried placing them randomly in different spots round the circuit but they do not make any difference I still get 25 HG at idle every where dropping to 15HG under load, The tranny is of the older type with the smaller sump-pan and the lockout/reverse light wiring aranged vertically, the closest diagram on here to my setup is this one http://home.comcast.net/~phantoms/vacuum/engine.jpg but not exactly the same as the euro spec is obviously different. My shifts are all very late although when the engine is warm and I adjust the throttle linkage I can get them acceptable although still late, as soon as I start again from cold I am back to square one. I note that the reading is supposed to start out at 10HG and drop to 0 at full throttle, the only way I managed to achieve this is to wind the throttle linkage in so that the 3:2 valve is partially depressed I am not sure that this is right, so here is my question, On the diagrams for automatic transmission the brake booster hose has two outlets, Is this type of hose designed for automatic transmission specifically? my brake booster hose only has one outlet and measures 25HG on the vaccum pump, Does the secondary one upstream reduce the vacuum output at the hose? Could this be my problem? Hope you knowledgeable folks over there can help me because talking to a parts guy in an MB dealership here is about as useful as an ashtray on a motorbike many thanks in advance

Felix