Charade CL10 diesel spares

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Who makes these engines? Presumably pistons and rings etc are outsourced to another company. Dealers parts prices are so outrageously high that soon my charades (1 diesel, 1 petrol) are likely to end up in a skip. The bodies are gone anyway owing to the nearby ocean.:'(
I would like to save the diesel engine for something else but 1 cylinder is low compression and it won't start anymore.:(