Recently I acquired a Peugeot 405, carburetor engine, it’s still work in progress to get back on the road but have hit a strange problem. ive noticed that the water is not going full cycle when the engine starts to run, have checked the radiator to check for blockage but it doesn’t seem to be blocked, water is still flowing, replaced the water pump as well. Anyone with a slight idea what the issue could be? Otherwise it’s great to e meat other Peugeot enthusiasts james