Injection pump trouble shooting
 

Recently did a head gasket replacement on my 94 6.5 and have had an issue getting fuel through the injection pump. I have a steady stream into the supply line and fuel flowing through the return line however can't get anything into the lines that feed the injectors. After testing connections and every thing that I have came across I can't seem to figure out the problem. Was thinking maybe the pmd whent bad any thoughts?