97 ranger wont start, has spark and fuel

[devilman13xx]

my buddies truck died on him while going down the interstate. its a 97 ranger 3.0 auto. we had it towed to my house thinking it may have been a frozen a/c comp. anyways after realizing it wasnt that i checked the fuel pressure and got 40psi while cranking. i hooked up an inline spark tester to the driverside middle plug and it lit up. we tryed spraying some starting fluid into the intake and it shot out a huge flame after cranking for a bit. im thinking it the timing chain but im not a ranger expert so i figured id ask some.

[waynebo]

I have a post below you,,Won't start,,same problem,no answer yet..i'm thinking maybe cam position sensor. but i read somewhere that it should still run off the crank position sensor so i don't know,,wayne