I just finished up installing a used rebuilt 4.0 L in my 2000 Wrangler. I used all my parts from the old motor to the new one, Intake, Alt, PS Pump, AC compressor etc... The motor turns over but will not fire. Pulled a plug and it smells like its getting fuel and there is fuel spitting out on the rail bleeder. Any Ideas on what I should do to trouble shoot this problem.