Question about 2003 Land Rover Discovery

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#4 CYLINDER MISFIRE

I had ALL 8 cylinders and wires changed... when i got my car back..the check engine light is STILL ON... a code: #4 Cylinder is still misfire'n??? and the mechanics can't figure it out... what's up with that??

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  • Juliet Cruz Feb 09, 2009

    Thanks .. I did have my head gasket replaced...infact the shop had to do the work twice... i'm going to have to confirm this with them.. thanks again!!!!!!!!!

  • Anonymous Mar 05, 2009

    It makes me wonder because I just changed all the spark plugs and wiring and now thinking about the ignition coil but the head gasket is leaking so it makes me wonder. Getting misfire reading on OBD readout.

  • Steve Draper May 11, 2010

    Have all the ignition leads and plugs been inspected.
    Try changing the plug with another one.
    You do get rogue spark plugs now and then.


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Hi the most likely fault would probably be head gasket, it maywell show no other signs of fault as it can blow into next cylinder.
Have a compression test carryed out and all 8 cylinders should be within 10% of each other.

Posted on Feb 08, 2009

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Read more at: http://www.obd-codes.com/trouble_codes/
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P2195 O2 Sensor Signal Stuck Lean Bank1 Sensor 1 P2196 O2 Sensor Signal Stuck Rich Bank1 Sensor 1 P2197 O2 Sensor Signal Stuck Lean Bank2 Sensor 1 P2198 O2 Sensor Signal Stuck Rich Bank2 Sensor 1

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