Just picked up a 99 4x4. Excited about getting it right and driving it. But the thing only will fire off on starting fluid but then run fine after that. Changed spider with a known good used one and same issue. Checked fuel pressure and I get 52psi when I turn the key but then it Immediately falls off. I have changed the filter as well. I'm leaning towards the pump. Any other suggestions? Thanks in advance😎😎

 

Fixed. It was the fuel pump. Just because you have fuel pressure doesn't mean you have ENOUGH fuel pressure.

 

Thanks for letting us know what fixed it. It's all useful info.