Symptoms of fuel bad fuel pump - Page 2 - Ford Powerstroke Diesel Forum
General 6.7 Discussion (2011-2016) General 6.7 Discussion

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post #11 of 25 Old 09-17-2019, 10:26 AM
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Originally Posted by Bluwaterbrew84 View Post
Is the high pressure pump at the DFCM? If so that is the one he heard. Where is the low pressure pump located?
The one Larry described is your low pressure pump and it is mounted on the drivers side frame rail. That's the one that whines when you turn the key. It supplies the HPFP that supplies the injectors and so forth

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post #12 of 25 Old 09-17-2019, 10:30 AM Thread Starter
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Originally Posted by UR2EZ View Post
The one Larry described is your low pressure pump and it is mounted on the drivers side frame rail. That's the one that whines when you turn the key. It supplies the HPFP that supplies the injectors and so forth

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Sorry for all of the questions, but where is the high pressure pump? Can you usually here it?

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post #13 of 25 Old 09-17-2019, 10:50 AM
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No, it's below the lower manifold in the engine.

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post #14 of 25 Old 09-17-2019, 01:12 PM Thread Starter
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I went and purchased a scan tool. It is throwing code P062A.

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post #15 of 25 Old 09-17-2019, 01:15 PM
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I went and purchased a scan tool. It is throwing code P062A.
Stand by my earlier post, change your fuel filter and tighten it.

https://youtu.be/ipmRgS4DcKA

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post #16 of 25 Old 09-17-2019, 04:28 PM Thread Starter
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Stand by my earlier post, change your fuel filter and tighten it.

https://youtu.be/ipmRgS4DcKA
Just changed the fuel filters because they needed it anyway.* Still no dice.

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post #17 of 25 Old 09-17-2019, 04:31 PM
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Stand by my earlier post, change your fuel filter and tighten it.

https://youtu.be/ipmRgS4DcKA
Just changed the fuel filters because they needed it anyway.* Still no dice.
Make sure you tightened it correctly, make certain you have the green washer properly installed

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post #18 of 25 Old 09-17-2019, 04:33 PM Thread Starter
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Also after trying to crank a hand full of times and doing the ke on key off thing a couple of times I noticed the dash lights dimming the last time i tried to crank. Could it be a battery issue after all?

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post #19 of 25 Old 09-17-2019, 04:33 PM Thread Starter
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Make sure you tightened it correctly, make certain you have the green washer properly installed
Pretty confident that everything was done correctly.

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post #20 of 25 Old 09-19-2019, 08:16 AM
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I know after changing fuel filters I usually cycle the fuel pump a good number of times to try and prime everything back up (I even pre-fill the oil filter from my 7.3 habits) and it cranks about .5 seconds longer than normal operation.
Does your scan tool have any datalog streaming? May be worth while to check some pressures to see if it's getting what it needs when cranking.
Also, newer vehicles hate sitting. I left mine sit for about a month and both batteries were dead (brought them back from 4V lol) and have been fine since. If I don't drive it at least once a week I'll let the remote start run for 15 minutes to keep her up and fresh. My 7.3 sits for much longer (and is a manual so not remoting it) but has some big Optima deep cycle batteries in place and those things are beasts (started at -30F, never plug it in, to see if it was not gelled or would warm up, gelled and died 30 seconds later, 6.7 was gelled and would not supply enough fuel past idle), they are way to tall for the 6.7 though
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