Hi guys,
It is almost one year, since last post in this case. So sorry for long delay in posting results. It has been quite many issues around and that is why I have not remembered to post anything conserning my Lister. Yes, I really changed the injector, which I ordered from UK (was it Stationary Engine Parts ?) and got it rather quickly. In my cabin, where Lister is located, I changed the injector with copper washer included to injector and also changed all possible tubes and filter in fuel line and then fired Lister up. And "voila" .. engine fired up nicely and only little some gray smoke for seconds and after that, very clear smoke, even non visible and the sound of engine was way much nicer. So, I think those were really critical parts to change and thanks to many of you helping me to solve out the problem. I run the engine many time during last summer and always it fires up very nicely and no bad smoke at all. So, you gave my engine really a new life. Thanks.
My only small issue is, that after measuring the output of generator, I found it was a little bit under specs and that is why, I have to locate and find the right way to speed up running a bit. I think, it may solve the last small issue for me. It is really nice to have such a reliable engine to produce electricity, always when sun is not shining and solar panels are more or less some weight on the roof :-)
Thanks buddies a lot for helping me and I do hope, that I can assist you guys some time, when my knowledge is better on stage :-)