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90, bronco ll hard start in morning, good fuel pressure , fuel pump runs for at least 5 min in the morning and it won't start untill pump quits running, as the truck warms it will start quicker. Don't know what to do next.

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  • Cars & Trucks Master
  • 22,095 Answers

Renew the fuel pump the pressure is too low

Posted on Oct 18, 2013

  • 2 more comments 
  • james Nov 03, 2013

    Pressure is right on.

  • Colin Stickland
    Colin Stickland Nov 04, 2013

    no idea i do get some weird and wonderfull faulys but never seen this -ok i know its a american vehicle i dont see here in spain but its still a motor and as such i should know or have some idea now the only thing i can come up with at the moment and thats to plug the code reader in and then read off the pids or information when the vehicles running to see if any sensors are not reading right or start giving the wrong reading as it warms up .

  • Colin Stickland
    Colin Stickland Nov 04, 2013

    Have you checked the pressure when cold ,then leave the gauge connected and read the pressure till it starts ,check the plug gaps as well 25th could a non return valve be playing up or the pressure valve on the end of the fuel raIL ? Honestly i think i would need my head under the bonnet to sort this one out ,and threaten it with my bigger hammer if it doesnt work

  • Colin Stickland
    Colin Stickland Nov 04, 2013

    Add a CommentJust thought remove the fuel pump and check the pipe from the fuel pump to the outlet connection its a flexible plastic pipe and if its split near the top it could be drawing in air so its not pressurising properly

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Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa!!

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