Yellow dust from the exhaust (very much)

Hello together I hope the topic is right here. short: After a repair: control chain, clutch, injection nozzles, balancing shaft. (on holiday in Austria ) car picked up, after 300 km, engine didn’t really gas anymore, we stayed out of the exhaust with white smoke (a lot of white smoke) and yellow dust. The yellow dust was distributed after the remaining 3m behind the car and the trunk cover was full of splashes. (yellow/brown light) cooling hose nozzle on the cooler lid drained broken (gluing point ?) Cooling water sprayed everywhere in the engine compartment (brownish with a stitch yellow, muddy) Oil was a bit bright for a diesel (after 200km (workshop drove towards us) a bit strange, after another 3ookm it was dark but a little thin liquid) see photos