2006 Liberty cranks, starts, and runs perfectly when engine is cold. If you drive 10 miles and turn it off and wait 5 min it will crank and not start. Wait 10 more min. and it will start. I replaced just the fuel pump, not the entire assembly and it does the same thing. Engine Running fuel pressure is 50 psi Engine off, after running waiting 10 min., fuel pressure is 52 psi and gets a crank no start. I can get it to start 3 different ways when I get a crank no start with a warm engine: 1) If I drain the fuel pressure from the fuel rail shredder valve the Liberty will start perfectly and run well. 2) If I let it sit for 15 min. or more it will start. 3) If I spray brake cleaner down the intake it will start. Anyone have any ideas or next steps with troubleshooting?