https://www.youtube.com/watch?v=Y1UvQZyDWOc&feature=youtu.be
VIDEO
The check engine light comes on your 4.4 LR3, and in checking, you find you’re getting misfire codes.
The most common problem for this is a bad coil or failed spark plug.
Watch Doug, our Land Rover Master Technician, as he gives you tips and pointers on diagnosing a bad spark plug or ignition coil.
This tech tip is demonstrated on an LR3 V8 4.4L.
Also Applies to: Range Rover Sport Supercharged 2006-2009; Range Rover Sport 2006-2009; Range Rover Sport Supercharged 2010-2013; Range Rover Sport 2010-2013; Range Rover Full Size 4.4 Jag Engine 2006-2009; Range Rover Full Size 4.2 Supercharged Jag Engine 2006-2009.
Please refer any questions or comments to 1-800-533-2210 or contact us via the question tab.
Part # LR005253 Spark Plug // Part # 4744015 Ignition Coil Diagnosing Bad Spark Plugs & Coils Demonstrated on: LR3 / Discovery 3 V8 Engine Only 2005 - 2008. Also applies to: Range Rover Sport Supercharged 2006-2009; Range Rover Sport 2006-2009; Range Rover Sport Supercharged 2010-2013; Range Rover Sport 2010-2013; Range Rover Full Size 4.4 Jag Engine 2006-2009; Range Rover Full Size 4.2 Supercharged Jag Engine 2006-2009Hi I'm Doug, your tech support representative here at Atlantic British. And in this video we're going to touch base on how to essentially diagnose whether you have a bad coil or a bad spark plug. And this will be demonstrated on a 4.4 LR3. This will be 2005 to 2009. The same application basically is going to be the same for the Sport, the Supercharged Sport. And the basis of this will also apply to the Full Size Range Rover. Any of the 2006 to 2009, with the 4.2 or the 4.4. Now essentially what happens is the check engine light comes on. You get in. You check the codes. You're getting misfire codes. There are a number of reasons why you can have a misfire code. We're not going to touch on all of that right now, but what we are going to concentrate on, the most common factors usually either a bad coil or a spark plug has failed. And essentially what you're going to need to check it out because we want to keep this as little complicated as possible is one, obviously you're going to need a ratchet, quarter drive with a 16 millimeter socket, that's going to take the top engine cover off. A low voltage test light. This unit is used to not only check for power and grounds at the 12 volt level, but also at the 5 volt level. So that will be versatile. We're going to need that. A pair of pliers. This style I seem to favor for pulling the 2 relays out of the relay box and we'll show you why we're going to do that. And then I like to keep a long straight blade screw driver if I have a problem getting the connector off the coil. You can use this to lift the tab up a bit, and just enough to coil off. And then we have an old school momentary switch which we're going to use to jump the starter relay, crank the engine over. This is if you're working alone and you don't have a helper to be able to turn the key for you. So essential where we're going to start is we've taken the engine cover off. I've removed, popped off the plastic cover that covers the coils and the spark plugs. This is a 2006 LR3 with a 4.4.I would replace that plug. Now here's a good running plug. We have a light tan tint to the porcelain on the bottom. If you see more of an orange tint or possibly green if you're using the green coolant, which shouldn't be in this vehicle. But if you see more orange to it there's a possibility you're getting coolant in there. You can use the spark plug to start of read the situation that's developing in there and why you would have a misfire in that cylinder. So at this point, if you've also pulled the spark plug and you've checked spark, then this is not the cause of your misfire, you need to be looking at either fuel injection or possible compression test, see if you have low compression and there's other things that can be involved with that. But, for testing the coil and the ignition, this would apply to LR3, LR4, Full Size Sport, basically any of these 2006 to 2009 Full Size LR3 and Sport that has the 4.4 and the 4.2 engine. So if you should come across where you find you need an ignition coil or a set of plugs for your vehicle just give a call to any of our knowledgeable salesmen at 1-800-533-2210. Thanks for watching.
LR3 / Discovery 3 V8 4.4L | 05 - 09 | 4.4 V8 Engine Only Range Rover Full Size 4.4 (Jag Engine) | 06 - 09Range Rover Full Size 4.2 Supercharged (Jag Engine) | 06 - 09Range Rover Sport | 06 - 09Range Rover Sport Supercharged | 06 - 09This video has been viewed: 62,588 times
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