You have 1998 ford mustang that will not start but is firing and has fuel pressure?

Answer 1

An internal combustion engine needs 3 things to run; if it has all three it HAS to run.

1. compression. If the cylinders are building compression properly, and the valves are properly timed, that requirement is satisfied.

2. ignition. If the spark is adequate and timed properly, that requirement is satisfied.

3. fuel. If the carburetor or injectors (whichever your engine has) is delivering fuel properly, that requirement is satisfied.

If the engine isn't running you need to find out which requirement isn't being satisfied.

The easiest to test would be fuel. Try using starting fluid to see if the engine will briefly run. If it does, you probably have a problem with fuel delivery.

If THAT'S not the problem, check the compression. The compression should be even across all cylinders and somewhere around 90-is psi, but you should check with Ford to find out the expected pressure... I'm only guessing.

If the compression is up, and the starting fluid didn't get the engine running briefly, the ignition may not be timed properly, check THAT with a timing light.

If it's a problem with the ignition, the computer may have "thrown a code", and you can probably find out a lot of what's wrong by just running a computer diagnostic.