Hi my name is Tahoe have 2001 land rover discovery 2 have misfire code 300 01 04 06 07 what could it be change coils plugs and wires

 

Plugs and wires first, exam plugs for signs of coolant, which would be unusual as both banks of cylinders are involved.

 

Post any codes read with a code scanner

 

How many miles on your engine, has it ever been tuned before along with 8 mm plug wires?
Make sure to buy your plug wires on line not from a parts store and get something like STI 8 mm wires or Magnecors.
Are you planning on doing the wire install yourself, if so get back to us so we can tell you the easier way to replace them.