Charade G200: too high lambda value, engine goes very hot in use, spark plugs are quite white...



These symptoms I have find out lately (which are mentioned in, the title).
It seems strange because lambda has been before always in 0,999 value.
Engine is also too hot, it has boiled few times in last winter. Anyone have
any wild guess? I have no idea... Lambda sensor itself seems to be OK...

High lambda value

This can be caused by a leaky exhaust. White spark plugs are usually caused by the engine running lean which could point to a leaky exhaust and the emu is trying to correct this by running lean. This only my opinion but at least it's worth looking into.