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missfire

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Range Rover Blues:
Is it a pre-cat model?  if so try disconnecting the EFi temp sensor at the front of the inlet manifold and drive it like that, it will use more fuel.

If it runs better then youhave a fuel issue, perhaps the MAF meter.  Hot wire EFi has many stages of cold start fuel enrichment, the last stage lasts up to 80 degrees.
If it's running well cold but not hot I wouildn't suspect over-fueling straight waay or you'd be getting unburned fuel when cold.

Have you tried injector cleaner?

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