Ford Powerstroke 08-10 6.4L Discussion of 6.4 Liter Ford Powerstroke Turbo Diesels

6.4 l low pressure lift pump

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  #11  
Old 02-13-2017, 07:50 PM
Dennis Lawson's Avatar
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Did you change the frame rail filter also? if so be sure the cap is tight and not losing suction there. if you did that, probably the lift pump, located on the frame rail. after i changed my filters, i found that my pump was bad. ran, but no pressure.
after i installed the new pump, it filled the top bowl up in about 2 seconds.
 
  #12  
Old 02-13-2017, 08:05 PM
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Originally Posted by Dennis Lawson
Did you change the frame rail filter also? if so be sure the cap is tight and not losing suction there. if you did that, probably the lift pump, located on the frame rail. after i changed my filters, i found that my pump was bad. ran, but no pressure.
after i installed the new pump, it filled the top bowl up in about 2 seconds.
yes we did the bottom filter. I would have to double check the cap. But it's not leaking in any way
 
  #13  
Old 02-13-2017, 09:12 PM
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Sounds like the lift pump is bad
 
  #14  
Old 02-13-2017, 09:18 PM
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Old 02-13-2017, 09:19 PM
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Would you say that even though it worked prior to cleaning and after installing it does come on and off when I turn the key?
 
  #16  
Old 02-14-2017, 05:16 AM
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Yes. Mine was working fine as long as it was primed.
When I changed the filters and took away all the fuel, it was not strong enough to prime itself.
 
  #17  
Old 02-14-2017, 07:17 AM
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Originally Posted by Dennis Lawson
Yes. Mine was working fine as long as it was primed.
When I changed the filters and took away all the fuel, it was not strong enough to prime itself.
Let me know if this fixes your problem as it did mine.
 
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