No fuel pressure after parking on a steep incline? - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 11-20-2014, 08:13 PM Thread Starter
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No fuel pressure after parking on a steep incline?

Been meaning to get around to asking this question, but 2 months ago I had 190 injectors, regulated return fuel system, and a FASS 200gph installed. My driveway is one steep ****er. Its over 120ft long and there is over a 40ft elevation change from the bottom, to the top. I don't know what percent grade that works out to, all I know is that I hate it a little more everytime I have to bring the trash down for pickup.

Anyway, i normally pull all the way to the top and lock the e-brake first and then put it in park but that first week when I got the truck back I found 2 issues. 1st, If I let my truck get just a little below a 1/2 tank of fuel, the next morning when I cranked it, my FP gauge in the pillar will show no pressure. It cranks and idled just fine but it will take 15-20 seconds before the FP would move from 0 to 70psi.

To fix this issue, I started backing up the driveway (which is nearly impossible in the rain without turning on 4x4) so that my front end is lower than the rear. Problem never happened again after that.

Another issue that I learned not to do again is not to let it drop below 1/4 of fuel. I did once and after a quick 75% throttle run, right after I let out the FP dropped to zero. I guess the acceleration sloshed all the fuel to the back and it sucked air? So long as I'm above 1/4 and not parked with my *** end lower than the front, I never had another issue with my FP.

I'm just curious Is there anything that can be done to prevent this from happening or is that just the nature of these trucks? At least now I know that when ever I do eventually take it to the track, don't go with only 5 gallons of fuel in the tank like I've always done with my gas vehicles to keep weight to a minimum.

2007 Ford F250 CCSB - Daily Driver
KC 68mm Turbo, WPE Intake Manifold, 190/75 Inj, Reg Return Fuel Sys, FASS 200gph, 58v FICM, 4" Exhaust, Studs, EGR Delete
670RWHP / 1153RWTQ-Fuel Only

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post #2 of 8 Old 11-20-2014, 09:16 PM
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Most likely your foot broke off your fuel pick up in the tank. Drop the tank and clean out all the pieces and replace the foot. https://www.strictlydiesel.com/p-271...up-screen.aspx


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post #3 of 8 Old 11-21-2014, 02:31 AM Thread Starter
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Awesome. This sounds like it may be a fix to my problem then.

2007 Ford F250 CCSB - Daily Driver
KC 68mm Turbo, WPE Intake Manifold, 190/75 Inj, Reg Return Fuel Sys, FASS 200gph, 58v FICM, 4" Exhaust, Studs, EGR Delete
670RWHP / 1153RWTQ-Fuel Only

2000 Ford Lightning SVT - Weekend Toy
Built Motor, Whipple 3.4L SC, Heads, Cams, Fuel System, Exhaust, Suspension, Full interior with AC
10.9 @ 124mph on 18" Drag Radials and 93 Pump Gas
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post #4 of 8 Old 11-21-2014, 02:37 AM
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When you bring it over here i'll put a sump on it for you!

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post #5 of 8 Old 11-21-2014, 02:51 AM Thread Starter
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Quote:
Originally Posted by Dawg2500HD View Post
When you bring it over here i'll put a sump on it for you!
Oh that would be my preferred method. I didn't know one was made for our trucks. Hell I didn't even know that there wasn't even a in-tank fuel pump until recently...

I I'll just hold out and keep a 1/4 tank or more until then.

2007 Ford F250 CCSB - Daily Driver
KC 68mm Turbo, WPE Intake Manifold, 190/75 Inj, Reg Return Fuel Sys, FASS 200gph, 58v FICM, 4" Exhaust, Studs, EGR Delete
670RWHP / 1153RWTQ-Fuel Only

2000 Ford Lightning SVT - Weekend Toy
Built Motor, Whipple 3.4L SC, Heads, Cams, Fuel System, Exhaust, Suspension, Full interior with AC
10.9 @ 124mph on 18" Drag Radials and 93 Pump Gas
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post #6 of 8 Old 11-21-2014, 03:52 AM
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Sump FTW and don't look back.

Chris... LBCC dirty old XL... studded and deleted, oringed heads, CCV reroute to exhaust on 5" axle dump, Odawg S3r intake, KC S2R, Holder's 190/30s, custom built R/R with 6.7 pump and Fuel lab parts, AFE/CXS intake, BD ypipe and manis, CSF intercooler, Turbosmart BOV. PMF traction bars and steering components..... almost done, I hope.

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post #7 of 8 Old 11-21-2014, 05:13 AM
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The 200gph pump should have been installed with a suction tube(red fitting on top of tank), it should not be pulling from the factory tubes. I am in no way saying a shop did not do a good job but if you are having issues at 1/2 tank then there is probably an issue with how the suction tube was cut, most likely too short.

A sump should solve the issue though. Should also have 5/8" line from the tank to the FASS.
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post #8 of 8 Old 11-21-2014, 07:13 PM
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Quote:
Originally Posted by ZaC851 View Post
Oh that would be my preferred method. I didn't know one was made for our trucks. Hell I didn't even know that there wasn't even a in-tank fuel pump until recently...

I I'll just hold out and keep a 1/4 tank or more until then.
Yep! Bean's diesel make a nice sump! That's what's on my truck. Very simple install too

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2015 6.7 Platinum
Lots of NL stuff
H&S 369SXE
Spartan tuning

2006 Shorty in progress
Lots of fuel, turba and NL stuff
The Following User Says Thank You to [email protected] For This Useful Post:
mossyoak (11-21-2014)
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