Hi everybody! Just when you thought you had gotten rid of annoying 2E3 questions, here I come and throw one more: I just bought an Opel Kadett 1.3S, 1990. Very similar to Vauxhall Astra, from what I've been told. Anyway, it features a Pierburg 2E3 carburettor, and here's my problem: Assume the engine is cold (has been left out for 10 hours at -10C, i.e. really cold). Starts-up nicely, at first try. Idles at high speed for 3 seconds and then the idle becomes 'lumpy', as if the mixture were too rich (but that's just a guess, I can't check the mixture). Depending on temperature and engine speed, this problem disappears after 10 mins. To be more accurate, it goes away when the water temperature gauge reaches the blue marking on the scale -beforehand it stays far in the un-measurable range, the needle goes as low as mechanically allowed to-. If I attempt any driving during this period, the car feels lumpy and has almost no power. Still, the engine shows no sign of trying to stall, it runs stable (within the above-specified problem limits). To give you some idea on the temporal sequence of problems under my bonnet, I'll try to summarize it below:
Cold engine start: 'bumpy' idle, ----lumpy driving;
10 mins after: fast, stable idle ----lumpy driving; 20 mins after: fast, stable idle ----stable driving; Then: the fast idle goes away by depressing the throttle once or twice. Then: everything runs just fine. Low idle, good response. No 'but's.The sparkplugs are new and the ignition is electronic. HT wires in good condition, under my own inspection. One more weird thing, the hot/cold air flap valve in the air cleaner spout is present and in good working condition. But it is not attached to anything (no vacuum hoses or thermostatic gadgets). It revolves around an axle and is brought back to a stop by a spring. I don't know who or what controls it. Again, Haynes manual is misleading, they point out some vacuum hoses. I have no hoses there and no hole in the air cleaner body to attach them. The only hose attaches to the air cleaner just near the carb body and is termed: 'Air cleaner hose connection', in the Haynes manual.
Please help me identify the problem. Had already spent some 30 euros on Haynes manual, but they seem to be addicted to replacing (or disassebling) the part, rather than repairing it. No good hints in there.
Thank you.
Matei