fuel pressure drops at wot - PowerStrokeNation : Ford Powerstroke Diesel Forum


Home Today's Posts Mark Forums Read
Go Back   PowerStrokeNation : Ford Powerstroke Diesel Forum > Super Duty 1999-Current > 6.0L Power Stroke Technical Info
Register Members List Timeslips Calendar Sponsors Becoming a Sponsor Mark Forums Read Auto EscrowAuto LoansInsurance

PowerStrokeNation.com is the premier Ford forum on the internet. Registered Users do not see the above ads.Please Register - It's Free!
Reply
 
Thread Tools Display Modes
  #1  
Old 10-19-2012, 01:52 AM
sixOno's Avatar
sixOno
Offline
PSN Local
Member's Gallery
 
Join Date: Jul 2012
Posts: 108
fuel pressure drops at wot

70psi at idle but as soon as give the truck wot run the pressure drops and will drop to zero if i let it. Just put a new upgraded airdog II on because i thought the pump was getting weak. Ive got the blue spring upgrade 6.4 banjos. What could cause the pressure to drop that low but only at wot? Im stumped.
__________________
190/100's,adrenaline hpop,powermax,arp's,58v idp modrate tuned ficm,extreme x,5'' exhaust,afe stage3,coolant filtration,oil bypass,egr delete,airdogII 165,6.4 banjos,sump,egt's/boost/trans/fuel gauges.
Reply With Quote Go to the top
Sponsored Links
Advertisement
 
  #2  
Old 10-19-2012, 03:48 AM
lenzhotrod
Offline
PSN Veteran
Member's Gallery
 
Join Date: Dec 2010
Posts: 1,202
Re: fuel pressure drops at wot

A restriction,a bad fuel pump, plugged fuel filter.....
Reply With Quote Go to the top
  #3  
Old 10-19-2012, 05:53 AM
treetechsixOH's Avatar
treetechsixOH
Offline
Certified Engine Destroye
Member's Gallery
 
Join Date: Sep 2011
Location: Eastern Central Indiana
Posts: 533
Re: fuel pressure drops at wot

Yep^. Pretty cut and dry there.
__________________
___________________________________
03 CCSB Lariat 350 SRW
Built by me @ Outlaw Diesel Performance
Warren/K&N/Deleted/Exhaust, few other goodies.
Studs, SCT, Nitrous Express, ODP RR, Custom Fuel waiting for install.
Reply With Quote Go to the top
  #4  
Old 10-19-2012, 12:33 PM
Mhatlen's Avatar
Mhatlen
Offline
Fuel it up again Dummy
Member's Gallery
 
Join Date: Jun 2012
Location: Elk Grove,Ca
Posts: 936
Send a message via MSN to Mhatlen
Re: fuel pressure drops at wot

Have you replaced upper fuel filter, the airdogII is a new fuel conditioner/pump assy? I am assuming.
I have heard of guys having problems with pick up in fuel tank, may be where you need to look next. Does it change with a full tank of fuel?
__________________
2006 F250 Lariat SC 4X4, ScangaugeII,CAT EC-1,Sinister coolant filter,blue spring, Atlas40, Updated Turbo lines/stc/standpipes/dummy plugs, DC Power 190 alt., 4"exhaust straight piped, Amp Steps,Optima Blue Tops,7"fabtech lift w/D&R Coils,Rancho RSX9000,Toyo MT 38/15.50/18. 168 lbs of Dyna-Mat,Also 200 lbs of foam rubber under cab and firewall.
Reply With Quote Go to the top
  #5  
Old 10-19-2012, 12:55 PM
sixOno's Avatar
sixOno
Offline
PSN Local
Member's Gallery
 
Join Date: Jul 2012
Posts: 108
Re: fuel pressure drops at wot

I wouldnt think it has a pick up ptoblem because im running a sump. New airdogII 165. And i changed the top filter. This is why im thinking airdog pump is bad.
Reply With Quote Go to the top
  #6  
Old 10-19-2012, 02:01 PM
Zmann's Avatar
Zmann
Offline
PSN Veteran
Member's Gallery
 
Join Date: Nov 2010
Posts: 5,711
Re: fuel pressure drops at wot

what did fuel PSI do before you swapped pumps ?
__________________
O6 King Ranch cc sb 7 inch lift ,37 Toyo's,Helo’s Edge Insight CTS guage only , Auber EGT , o8 center console ,2x10 subs, xm satellite ,coolant filter,RSX 9000 shocks,dual bilstein steering stabilizers ,Viper , remote toolbox popper, High Idle mod , up fitters added ,weather guard mats , ARP's, BPD EGR cooler, Fabtech traction bars, X3 Matt's tunes
Reply With Quote Go to the top
  #7  
Old 10-19-2012, 03:57 PM
sixOno's Avatar
sixOno
Offline
PSN Local
Member's Gallery
 
Join Date: Jul 2012
Posts: 108
Re: fuel pressure drops at wot

Dropped the sameway
Reply With Quote Go to the top
  #8  
Old 10-19-2012, 07:14 PM
Zmann's Avatar
Zmann
Offline
PSN Veteran
Member's Gallery
 
Join Date: Nov 2010
Posts: 5,711
Re: fuel pressure drops at wot

? wonder if the regulator is having an issue
Reply With Quote Go to the top
  #9  
Old 10-19-2012, 08:45 PM
sixOno's Avatar
sixOno
Offline
PSN Local
Member's Gallery
 
Join Date: Jul 2012
Posts: 108
Re: fuel pressure drops at wot

Im gonna check it out and see if its alright
Reply With Quote Go to the top
  #10  
Old 10-21-2012, 05:38 PM
sixOno's Avatar
sixOno
Offline
PSN Local
Member's Gallery
 
Join Date: Jul 2012
Posts: 108
Re: fuel pressure drops at wot

well i checked the airdog regulator and it looks good. could this be the regulator by the fuel filter? this may sound stupid but y would i need the regulator up there if ive got a regulator on the airdogII?
Reply With Quote Go to the top
Reply



(View-All Members who have read this thread : 71
'94IDITurbo7.3, 04 f350, 04harley250, 04La4iat, 2 Stroker, AJ 007, amdriven2liv, bismic1, Blowby, BlueOx, bond james bond, caleb90, cshsrh, CTC DEEZUL, Da Oops, dauntejoel, Dirtyboy82, dunatic, F-25000, farmboy8201, FastFiveO, fordfan30, ghohouston, gonehunting, HankyD, Harley Strokin', HeavyAssault, hustler315, jammin60, Justin6.0, justintimemoto, KCDAXFACTOR, king dinger, mastrkee, mej1201, Mhatlen, miller45103, mkelly, Nally7.3Powerstroke, Nutz, ohiopowerstoke, pa-powerstroke, polish pete, Polkville, RescueF250, RollingZrock, Ron-M, ronngat, shadow6.0, shmokenpstroke, sho669, sixOno, Slated4Greatness, Smoker05, Smokin Stroker, Snake, stoker04, stroked99_1/2, StrokeThis8, SuperBlazin, tatertot, The Butcher, treetechsixOH, tripletdairies, UNRULEE, Wheelhop, woodking, wrenchturner250, Zmann, zx800x
Thread Tools
Display Modes


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 08:12 PM.



Powered by vBulletin® Copyright ©2000 - 2013, vBulletin Solutions, Inc.