Hello Have a Opel Vivaro 2.5L is identical to a Renault Trafic, with a defective glowing candle where the 6-kant is quite flat. Thanks to the standing water (thanks to Renault and Opel) workshop tried to get 2 candles out, 2 lights are fixed. They meant they could try to knock a number smaller nut on the flattened 6-kant and try to get rid of it. the other one could also leave it still working. If it breaks The cylinder head has to be lowered because there is no place to drill or something similar. For the cylinder head has to be expanded the intake manifold or something down and for him the injectors must be out which are probably also firm. which of course there is a huge bill. Then there are specialists for light bulbs out some like the http://www.injectorenrauszug.de/ or http://www.gluehkerzenaubauen.de/ I have written the with mention of the vehicle, but get flat-rate priceangab The price is also about twice as high as with others, but ultimately it depends on the final result and cheap can also be very expensive at the end. Therefore I ask here whether someone has experience with these servicebars, or with the same vehicle, with the same problem. The problem would have to occur massively, because the manufacturer has made sure that rainwater in the holes in the Zyllinderkopf is in the vehicle type. I can only call this a customer contempt of them. According to my free workshop, it is normal for Opel. Greeting Waldemar