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Hello, my name is XXXXX XXXXX I will try help you with this.
As this has only happened since you replaced some parts you have to make sure that (a) The fuel filter is fitted correctly for flow direction, (b) The spark plug gaps are all correct, (c) You haven't left any sensor plugs disconnected around the engine bay you may have taken off.
You may also have a faulty spark plug.
If you still have the old plugs, refit them to see if the misfire clears.
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