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    Msix21's Avatar
    Msix21 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 11, 2014, 12:57 PM
    7.3 starting problem
    I have a 7.3 that starts fine in the morning or has be off for a long period... but when I shut it off after it get to running temp it will not start unless u pull it off.. what could be my problem?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Apr 11, 2014, 03:18 PM
    Sounds like an old, tired fuel pump. Pump clearances may be increasing when it heats up, causing the fuel pressure to drop. Try installing a new Motorcraft fuel pump. I would also replace the under hood fuel filter and the fuel filter on the frame.
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