I have a Landrover Discovery2 and first of all i changed my spark plugs about a week ago and the other day i was driving and i stopped at a stop sign and when i went to go my truck went dead. Now my service engine soon lights on. and there is gas and a little smoke coming from my exhaust pipe. What could be my problem?

 

loose spark plug? if you just changed them i would make sure you put them all the way in or a wire isnt loose. white smoke = burning oil?

 

The color of the smoke helps identify the problem. I would also think a loose wire, since you just did the plugs. The coil end is much more likely to not seat correctly, but it can happen on the plug end. Also check for corrosion inside the wires (at the connections). Another possibility is that one or more of the wires was damages when pulling them out of the original plugs. Come to think of it, loose plugs is another thing. The plugs are supposed to be torqued to 15 foot lbs, and I have seen plugs leak electricity from around the holes because of not being tight enough.

I like to wait until it's dark out, run the engine and spray down the wires and plug holes with water. It's a good quick way to see if a plug is loose or if wires are leaking (electricity). There seems to always be a little leakage, but only very slight. Nothing should leak from around the plug itself. Remember to use a spray bottle and spray it, don't poor water over it.

 

Blue smoke is oil, white is either coolant or steam (water). If it's coolant, it would smell foul. If you have a gas smell coming from your exhaust, then you're running rich and the engine isn't burning all the fuel its dumping into it, which could be a loose plug or ill-fitting wire, but a loose plug or ill-fitting wire probably wouldn't cause you're car to go dead like you describe, it would just run really rough and misfire. Someone more knowledgable than me will know more, but I've heard a bad crank position sensor will cause your car to just die. I'm sure you know this already, but when you replace the plugs, make sure you torque them to specs. The torque specs are in the RAVE manual. Print out ALL the torque specs and fluid capacity charts, and keep them in your owners manual or tape them to your workbench. Saves time, hassle and aggravation later on. Also, its a good idea to wait until the engine cools to pull the plugs and replace them. Metal expands and loses some of its strength when hot, and you can damage the threads doing it while its hot, not to mention over torque the plugs as a result of the expanded metal.

You can download the RAVE manual here. http://api.viglink.com/api/click?for...13348649827231. Its the factory work manual for your truck.

Also, get an OBDII scanner and read your codes, or take it to an Autozone, Pep Boys, Advanced Auto, etc. and they will read your codes for free. That'll give you a better idea of what's going on. If you plan on rocking your Disco until the wheels fall off, then an OBDII scanner or a real-time scanner like an ultragauge is a solid investment, as is a torque wrench and a fat wallet.

Good luck, get the codes read, and report back with the color of the smoke and the codes.

 

One wire or one plug will not usually cause the car to stall, but multiples will. I have heard of one cylinder being dead and the car intermittently stalling. But like Eaglerover said, have the codes read. That'll narrow things down a lot for you.