Justy now lives with us!!! Just a few questions….

Moinmoin, bought a Justy 1.0 yesterday. No rusts only on and a few bubbles, which do not disturb me any further. Various previous owners with year 1916 and 1917, the car itself year 08/92, comprehensible 103 ́km for 400€. I think that’s ok. Have also a few questions: From time to time, the engine swallows itself when accelerating, especially from low speeds. Normal? Or adjustment problem on the carburettor? Exhaust is light leaking. If I am swimming at the Is that normal, that the background noise increases considerably during all-wheel use and the sound reminds the whole thing a little bit of an unsyncronized transmission? It can no longer be deduced, whether the timing belt has been changed so far. Can you recognize that somehow? Are there any markings/marks that you can pay attention to? Is there anything else that I should pay attention to? Otherwise, the Jus will give me the ty now hopefully serve good services as a mobile “hunting lodge” without accommodation 😉 Thank you for your answers in advance Greeting Lärchenwald