ford f-150 with 5.0 will not start at times. it will always crank over
is it parked at an angle that would keep fuel from getting to the fuel pump pick up tube?
Check out this link to a Ford Forum - Even though your truck is not a Raptor, this may still apply -- http://www.fordraptorforum.com/f39/wont-turn-intermittently-2107/
Check fuel pressure whenever it doesn't start to see if it's fuel related
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