castler

4.6L runs great and always cranks cold, but will not restart once engine warms. Engine turns over, but doesn't fire up. Sometimes, acts like about to fire up for first few seconds but half way cranks/missing and then sputters out.

Once engine sits for a few minutes, then fires right up.

Just replaced fuel pump relay and that didn't fix it.

Anybody experience this and how do i fix it???