Black smoke

Hello, have the following problem : had to change the head gasket with my 1.8 cvh 64 KW (ZKS torn down – water loss) but with the damage nevertheless ran flawlessly. Now after the assembly, the engine runs like a tank and smokes black-grey back out. It starts immediately, stops the idle and also takes gas. That’s why I had asked here because of the basic setting (OT crankshaft).The mechanical setting is however in any case ok. Candles are raven black I fear that I put one of the hoses wrong – but don’t know which one. Maybe someone has an idea where I should look first – because have no desire to lie with the current minus degrees below the car.