2003 ranger doesn't start sometimes
 

Please help....My ranger runs great, never had any problems till recently. It still runs great but what happens is that sometimes it doesn't start . Then the next day it starts, with no problems. Its been doing that for about a 2 weeks. Ive changed the spark plugs, spark plugs, gas filter.
Could it be the fuel pump? Crank postion sensor? A relay?
If the fuel pump is bad would it do that, sometimes not start?

Re: 2003 ranger doesn't start sometimes
 

Is the check engine light on or is it throwing codes. Also putting a signature together with year engine size and such would be helpful too.