Servus, our Lupo is ill, since about 1/2 year the control light “Zündausssetzung Zyl.1”, engine runs in the stand restless, about 500UMIN. (the friendly V.A.G. dealer says no problem, continue driving). But now it annoys me, so that I first changed the candles, problem still there. At the V.A.G. dealer then still the Zünkabel and the ignition unit changed, no improvement… then he said new head on it, as already described in the forum several times (but only 1.0 engine). Lupo has 50,000km on it, Built.2002, VW does not refund any culantity according to the PC request. My question: could the problem also come from a defective injection valve, because head change is quite expensive, therefore I want to go safely. There are other ways( request at VW) if they show no culantness.