egine cranks fine but after ten secounds of cranking it wont start, i try again right after first attempt engine starts up no problem. no engine lights have gone on, have fuel, battery new
engine cranks but wont start right away on 1999 Ford Explorer
Try turing the key from off to run - not start - wait a few seconds then turn key to off and then try to start the truck. You might have a fuel supply / pressure issue. Cycling the key runs the pump to prime the system if it has completely bleed back to the tank it would take a few seconds to prime the lines and build pressure to start. That is a free way to test and see what you might have wrong and give you somewhere to start looking.
could be several issue,start by cking fuel pressure at diff times. i think you need like 51 lbs key on eng off
Try checking your timing chain