If a 2000 Escalade turns over but does not start what could be the problem?

Answer 1

There are two possible causes. One is lack of spark and the other is lack of fuel. You will need to determine which one you don't have. To check spark all you really need to do is remove one of the spark plug wires from a spark plug and using a plastic pair of pliers or something equivalent, have someone crank the engine and watch for spark. If there is no spark at the plug, you could have a few different things wrong like a crankshaft sensor bad. I am not sure what engine you have but I will assume that you have the 5.3 or 6.0L engine. These engines do not have a distributor. If you have a 5.7L it does have a distributor and a single ignition coil. If you have a single coil then you can remove the coil wire and check for spark at the coil in the same way that you did at the spark plug. To check fuel pressure you will need a fuel pressure gauge and it will hook to the schrader valve located on the passenger side of the intake manifold just below the engine cover. Has the fuel filter been replaced lately or atleast checked? If it is plugged that may be your problem. If you don't have a fuel pressure gauge you could remove the fuel filter and crank the engine to see if you have fuel coming out. If no fuel comes out you may have a bad fuel pump or no power to the fuel pump. Make sure to check the fuel pump fuse which will be located in the electrical junction block under the hood on the driver side. Also check the ECM "B" fuse. An electric fuel pump is good for about 100,000 miles give or take. If you have close to this mileage on your vehicle it is a safe bet that your fuel pump has gone out on you. I hope this helps and good luck.