Didn’t pass the MOT …because of black smoke when accelerating hard - and - the emission value CO was too high (4,35). There is new air filter, new oil with filter - and I took here out for a 300 km spin before MOT today, but no way Norway! Mileage is 244.345km. So please: Where shall I start?

Hello from way up north in Norway. I should drive in heavily rain yesterday: The car had been sitting for two days. After starting the engine I put the wipers on, but nothing happened. The wipers were dead in all functions. I checked fuse 1 and 8 - and both were OK. I then removed the wiper...