Crank but no start

Tiny
FIXITRAY
  • MEMBER
  • 2005 FORD EXPLORER SPORT TRAC
  • 4.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 215,000 MILES
Car was running and cut off at light. Restarted ran for about two miles, now will crank but will not restart.
Note: replaced fuel safety shut off, drive shaft sensor, fuel pressure regulator, fuel filter, fuel is present at rail, spark is present at coil pack for all cylinders, used noid light test-injector pulse present. Car cranks but will not start.
Friday, December 7th, 2018 AT 11:06 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,740 POSTS
Hi and thanks for using 2CarPros.

If you have spark, fuel, and air, the engine has no choice but to run unless for some reason timing is off or compression was lost. Do me a favor, see if it starts for a couple seconds using starting fluid and let me know what you find. If it starts for a couple seconds, confirm fuel pressure is within the manufacturer's specs.

Also, here is a quick link that discusses common causes for a crank/no start issue:

https://www.2carpros.com/articles/car-cranks-but-wont-start

Let me know. You did all the preliminary testing already. What I suspect is either the spark is weak or the fuel pressure is too low. Chances of internal engine damage or timing to go all at once, is unlikely. Truthfully, it sounds like a bad crankshaft sensor but the starting fluid test will tell me a lot.

Let me know what you find.

Take care,
Joe

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Friday, December 7th, 2018 AT 8:31 PM

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