Vehicle & Technical > Range Rover
wheel judder
Range Rover Blues:
--- Quote from: henryandlesley on January 23, 2008, 20:37:19 ---
the miss fire is on no2 plug is wet spark from lead and plig if put on head
--- End quote ---
I'm not sure what you mean there, but it sounds like you have found the culprit. If you are seeing the spark outside the engine then chances are the plug is knackered or the lead is totally shot. The spark will always find the easiest path to ground.
Range Rover Blues:
So No2 plug sparks when it's resting on the head :-. or not :?
It wouldn't be the first time I'd heard of brand new plugs being duff.
Range Rover Blues:
So it's not the spark then. What makes you think it's No2 specifically?
If it's not mechanical/lack of pressure, it's not he spark then next is lack of fuel.
Firstly check the injector plug, I've had the metal pins inside the plug slip out loads of times, if damn frustrating as it can cause a missfire that wasn't there before.
You could also have a blocked injector, or a fault somewhere else in the loom.
Another thing you can check is the resistance of one bank of injectors from the ECU multiplug, you need the Haynes manula for details though.
A final thought (not a nice one) is that chronic cam wear can cause a missfire.
Range Rover Blues:
Ok, then it sounds like fuel. I'd suggest you try unplugging the injector, you probably need to do more than one before you'll notice a difference though, so unplug one you know is firing, you might notice a slight change because you already have the missfire, then unplug no.2. This should confirm what you already think.
Whilst it's unplugged make sure the wiring in the socket plug hasn't moved.
You could try injector cleaner, otherwise try another injector.
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