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I have been trying to fix a no start hot on my 2003 6.0 powerstroke. Anyway I see a post where you say that the hpop gurgling back to sump means HPOP is gone. \
I have a new HPOP, 6 months ago, air tested it gurgled, truck ran ok only started cold all winter, it died in mid june, refused to start no how, only had 250psi on icp during crank,
pulled it apart, airtested without the pump just using pipes, it holds pressure, but when I use the icp port or the hole on top of the pump and apply air I get gurgling through sump.
I replaced the HPOP again, tried it brand new before starting, yes it gurgles back to sump.
asked 5 ford shop foreman, no one can tell me if that is natural, one says that's normal.
so I put my truck back together, it ran great, but still won't start hot, only have 475 on icp during hot crank vs 750 on cold crank.
can you tell me how you decided that gurgling back is a failure and how I can prove it to ford to get warranty on my new HPOP?
would really appreciate ANY HELP.