Question about 1994 Land Rover Discovery
We have replaced the leads, plugs & distributor caps. What else could the problem be.
Ok first of all did you put champion spark plugs in, that is what is recommend for the truck. I work at a land rover dealership and a few times doing a tune up, pulling the new spark plugs out of the box, the spark plug gap is smashed, soo make sure the spark plug gap is corrected. Another obvious is to make sure you have the spark plug wires to the proper spot on the distributor. If you havent replaced them a little trick to see if they are good is to get some water in a spray bottle and spray the wires down. If they are bad you will see the spark arcing from one wire to another.
Now i assume your getting a flashing check engine light since thats the only way you can know for sure that you have a misfire. Very rarely have i seen fuel problems with these Rover's but the easiest way to check is to buy a fuel pressure gauge and check for pressure. There is a fitting right on the fuel rail where you can check fuel pressure.
Ummmm ok without knowing any codes another common this that this Rovers do is blow head gaskets. If a head gasket is blow, then coolant leak into the combustion chamber causing a misfire. Depending on the situation you are either going to need new head gaskets or a new motor.
If you can pull any codes that would be helpful at least now you have some place to start.
Posted on May 10, 2009
There are 3 things needed for combustion fuel, compression, and spark. if you are missing any one of these you will have a misfire. you can check spark easily by pulling off a wire and making sure it arcs (make sure you are not touching the vehicle while touching the wire or you will get shocked, not enough to kill you, but is painful). to check fuel you can use propane and SLOWLY!!!! open to the intake and if the injector is stopped up it will smooth out (because it will start running on the propane instead of the gas in the car). if you open the propane too quickly the car will stall. the propane almost always works, but i have had a couple of times it didn't. to check compression you would need a compression gauge, compare readings from cylinders, if one is considerably lower than the others you have a valve train or more serious issue.
Posted on May 10, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jun 04, 2014 | 1995 Land Rover Discovery
Jun 02, 2014 | 1994 Land Rover Discovery
May 14, 2011 | 1997 Land Rover Discovery
Apr 29, 2017 | 1994 Land Rover Discovery
Nov 16, 2009 | 1994 Land Rover Discovery
Sep 01, 2009 | 1999 Land Rover Discovery
Jul 27, 2009 | 1994 Land Rover Discovery
May 10, 2009 | 1995 Land Rover Discovery
Apr 26, 2009 | 1998 Land Rover Discovery
Dec 12, 2008 | 1995 Land Rover Discovery
247 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: