Problem starting up
 

I have a 1991 ford ranger xlt 4.0L v6 supercab. I recently replaced the sending unit and when i hooked everything back up i tried starting it up. I could hear the fuel pump engaging and the engine was turning over but it wouldn't fire up. Anyone know what the problem could be?

What type sending unit?

its a fuel sending unit

try some starting fliud and if it starts change the fuel pump i had one do thet before you could here it but it wasint giving enuf presher