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    jc6945's Avatar
    jc6945 Posts: 2, Reputation: 1
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    #1

    Jan 8, 2011, 12:15 PM
    Will not start after engine warm
    My 03 ford 7.3 sometime will not start after it has been running for awhile it acts like it is not getting fuel I can wait for a few min and it will start right up. It does not happen all the time just once in awhile. I have check the codes and nothing show that there is a problem. Any ideas on what's going on
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Jan 8, 2011, 12:23 PM

    Worn fuel pump? Read Item 6 below:

    https://www.askmehelpdesk.com/cars-t...ml#post1415281

    Ensure the engine oil and filter have been recently changed. Oil level and condition can affect fuel pressure on PSDs.
    jc6945's Avatar
    jc6945 Posts: 2, Reputation: 1
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    #3

    Jan 10, 2011, 10:48 AM
    Comment on TxGreaseMonkey's post
    I change oil every 5000 miles so that is not the problem but thanks for your help any other ideas?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #4

    Jan 10, 2011, 11:14 AM

    Worn fuel pump?
    imthatguy's Avatar
    imthatguy Posts: 7, Reputation: 0
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    #5

    Jan 11, 2011, 05:43 PM
    Are you using a higher viscosity engine oil than Ford suggests? Or an additive like Lucas? The injectors on your engine are pressurized by the engine oil after it goes through a high pressure oil pump. If the oil gets too thick as it heats up, the injectors won't operate correctly, and will not inject the proper amount of fuel.
    jc6945's Avatar
    jc6945 Posts: 2, Reputation: 1
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    #6

    Jan 11, 2011, 07:32 PM
    Comment on imthatguy's post
    I have used the same oil sense the truck was new this has just started in the last few weeks. I use delo
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