I have an 07 dakota alot of times it keeps turning over than fires up I put in a new pump new sensors the crankshaft and that other one I can't think of at the moment I've been told by many bad prime but it's a brand newer pump it's been doing it for three yrs

 

When I first bought mine, it was slow to start. Spark plugs were totally worn out.

Could be a lot of things. Start small, and dont warm up the parts cannon just yet

 

Check the battery, too.