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land rover range rover 4.0 se with misfire?

I have a range rover 4.0 se with a slight misfire i have replaced both coil packs ht leads and plugs given the engine a flush x2 and replaced the oil and filters but still have slight misfire the car has been used on the school run by the previous owner or does it need a good run to clear the engine

justin milliam
January 2008

Range Rover Vehicles, Cars 40 Se Misfire

You may need to check that you have the correct 'Champion 'plugs at the proper gap. Also check and replace your air pollen filters located below the windshield. If this doesn't cure, than you have burned up the main fuse box located on the inner fender. This occurs when pollen air filter have been plugged and the interior fans are ran on high. The air flow restriction creates electrical resistance as the motor cannot turn at the requested speed, resulting in electrical feedback to the fusebox.

Plugs $189 each x8
Pollen filters $18 each x2
Fuse Box $250-300

If I can be of any assistance please write or shop at 'Green Dog Rover' on ebay
or
dynesr@gmail.com

The Green Dog
September 2008

somehow my answer was clipped
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Engine Coolant Temperature sensor (not dashboard gauge)
Intake Air Temperature sensor
Fuel Temperature sensor
Camshaft sensor

MannyG
March 2008

Check air cleaner - replace if needed.

Get readings of engine sensors and of the fault codes as well.
Take special notice of the ff sensor readings and make sure they are correct :

O2 Sensors

MannyG
March 2008