Since most of my tools are a 1000 miles away from where I'm working. Does anyone happen to know what size fitting I would need to put in the Fuel Head bleeder port so I can hook a vacuum tester to check the IP? I know there was a Miller part # in the thread, but I looked far and wide and could not find one to order.

Not sure where I read about this test, but thanks to whoever mentioned it! So many people are throwing parts at these fuel problems without checking the vacuum on the pump. Just pinch the line prior to the filter head, and crank it over, looking for at least 3mm/hg if I remember correctly..

I wonder if the fuel control solenoid or MPROP could also give a low vacuum reading?

Thanks for reading

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05 CRD: H.D.S2 stat,WW Ironrock trilink&LCA's, OX rear,ARB front, 4.10's, ARB bumper, Suncoast,OME 3.5, JBA UCA,rock rails, Moabs&265/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new valves,sasquatch battery tray & grid heater, tensioner relocated
Mech fan, VH & AC delete

Anyone know if the bleeder is standard or metric on the 2nd gen fuel head? A 3 hour round trip to parts store makes mistakes tough, and they only have the standard one.

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05 CRD: H.D.S2 stat,WW Ironrock trilink&LCA's, OX rear,ARB front, 4.10's, ARB bumper, Suncoast,OME 3.5, JBA UCA,rock rails, Moabs&265/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new valves,sasquatch battery tray & grid heater, tensioner relocated
Mech fan, VH & AC delete

11 mm

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2006 KJ CRD AMSOIL Fluids, AMSOIL Oil Filter, AMSOIL ByPass Filter, Secondary Fuel Filter, Provent, Silicone Hoses, Rotomaster Turbo
2013 Audi A3 2.0 TDI Premium Plus
1948 T4 Willis Pickup
1993 C3500 Chevy 6.5 Turbo Diesel
1984 C7500 Chevy Flat Bed 366 gas
1987 R25 Chevy 350 gas

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
RL super sliders, Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

thanks for the sizes and the link fellas! I ended up not being able to find a metric fitting in town, but I was able to jam the tapered vacuum fitting in pump side of the fuel line (hopefully didn't put in particles in the line), and I got over the minimum reading

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05 CRD: H.D.S2 stat,WW Ironrock trilink&LCA's, OX rear,ARB front, 4.10's, ARB bumper, Suncoast,OME 3.5, JBA UCA,rock rails, Moabs&265/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new valves,sasquatch battery tray & grid heater, tensioner relocated
Mech fan, VH & AC delete