Hi after 9 years tucked away, thought I’d get the 2i out and enjoy her a bit.

On the engine side I’ve replaced: Fuel pump, fuel filer, coil, leads, spark plugs, radiator, coolant, oil and filters. Brake fluid will be next.

From cold the car has a mild misfire, 3mins later and a bit of heat getting around the engine it’s absolutely fine and runs like a dream.

Has anyone experienced this issue or know what the cause may be please?
Thanks