Low pressure fuel pump - Citroen DS4 Forums
 
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post #1 of 6 (permalink) Old 19th December 2020, 20:05 Thread Starter
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Low pressure fuel pump

Hi All,
Anyone tried to get the low pressure pump out of the fuel tank? The ring around mine does not want to unscrew & I don't want to break it! Any tips?
Many thanks,
Lee.
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post #2 of 6 (permalink) Old 20th December 2020, 09:42
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A photo might help

David
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post #3 of 6 (permalink) Old 20th December 2020, 19:40 Thread Starter
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Did it in the end, made a tool out of a piece of bar, 2 bolts & welded a nut, still a struggle to get off & back on though. & I don't think I've cured anything. Anyone know of any common fuel problems? 1.6 Blue Hdi 120 by the way!
Thanks again.
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post #4 of 6 (permalink) Old 20th December 2020, 21:16
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Fuel filter been done recently?
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post #5 of 6 (permalink) Old 20th December 2020, 21:17
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What makes you suspect the low pressure fuel system?
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post #6 of 6 (permalink) Old 23rd December 2020, 22:19 Thread Starter
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Filter was done the week before, old one had never been (64000 mile service). Cut out on me a week later, changed filter again for a genuine as I've red that they are picky about them. Re started EVENTUALLY, got home & hasn't started since, when it does it will only run for a minute (maximum), flow from low pressure didn't seem great, replaced pump with a second hand one from a running car, same flow & not cured(Citroen can't get one until at least January, & I need it now, Key worker & all that). No relevant fault codes from Diagbox, low & high fuel pressures are good(5bar & up to 500Bar), signal to injectors(albeit just done with a Power Probe so not very accurate) 5v to all injectors. I'm now presuming injectors but like I say no fault codes & I can't see all 4 failing at once? Could it be a crank/cam sensor with a dodgy signal? Any ideas gratefully received as I'm stumped, I'm not the best but pretty reasonable mechanically & electrically(do almost everything to my cars & bikes myself, & family/mates cars/bikes).
It's a 2015 1.6 BlueHdi, 120, DV6FC.
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