Low fuel pressure - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by phillyboy, this thread has received 20 replies and been viewed 2551 times.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 21 (permalink) Old 05-01-2009, 02:21 AM Thread Starter
Junior Member
 
Join Date: Feb 2007
Location: canada
Posts: 8
Points: 2,137
Thanks: 0
Thanked 0 Times in 0 Posts
Low fuel pressure

Hi we got a 2001 dodge cummins running 100hp injectors and a edge juice with attitude, it's got a new injection pump and the lift pump is only 10 months old. The lift pump was bought at carquest and was a upgraded one, the problem is we can't run any higher then level 3 because of low rail pressure, on level 4 it's down to 4 psi wide open. The edge is showing 18 psi idling but seems to higher than usual. thanks
phillyboy is offline  
Sponsored Links
Advertisement
 
post #2 of 21 (permalink) Old 05-01-2009, 12:32 PM
Member
 
cowboytw13's Avatar
 
Join Date: Dec 2008
Location: Clarion, PA
Posts: 157
Points: 6,377
Thanks: 1
Thanked 5 Times in 5 Posts
running that big of injectors and an edge, you need a large lift pump. I would recommend the Airdog 150 or FASS 150

2004 Silverado 2500 LLY Duramax
cowboytw13 is offline  
post #3 of 21 (permalink) Old 05-01-2009, 01:39 PM Thread Starter
Junior Member
Threadstarter
 
Join Date: Feb 2007
Location: canada
Posts: 8
Points: 2,137
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks, was going for the fuel system next but maybe should of done it first, is 18-19 psi a little high for idle?
phillyboy is offline  
post #4 of 21 (permalink) Old 05-01-2009, 02:00 PM
 
Join Date: Oct 2007
Posts: 38
Points: 992
Thanks: 0
Thanked 2 Times in 2 Posts
It's a little high. My Raptor pump pressure at an idle is 15-16. At WOT it only drops to 13-15psi. I have Sticks and a monster comp file on level 10 and have no fueling problems any more. With my stock Carter it would defuel due to lower pressure after 5-7 sec of WOT.
03 Power Smoke is offline  
post #5 of 21 (permalink) Old 05-02-2009, 02:13 PM
2nd Gen Guru
 
Mopar1973Man's Avatar
 
Join Date: Dec 2008
Location: New Meadows, Idaho
Posts: 2,641
Points: 55,331
Thanks: 9
Thanked 140 Times in 131 Posts
Garage
Send a message via Yahoo to Mopar1973Man
Quote:
Originally Posted by cowboytw13 View Post
running that big of injectors and an edge, you need a large lift pump. I would recommend the Airdog 150 or FASS 150
Agreed! you need a big pump for big sticks...
Mopar1973Man is offline  
post #6 of 21 (permalink) Old 05-03-2009, 02:00 AM Thread Starter
Junior Member
Threadstarter
 
Join Date: Feb 2007
Location: canada
Posts: 8
Points: 2,137
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for the help, Was also wondering if we could get by with one of those holly blue or black pumps for a while, kind of straped for cash since I just upgraded the transmission.
phillyboy is offline  
post #7 of 21 (permalink) Old 05-04-2009, 01:25 AM Thread Starter
Junior Member
Threadstarter
 
Join Date: Feb 2007
Location: canada
Posts: 8
Points: 2,137
Thanks: 0
Thanked 0 Times in 0 Posts
Anybody think i could get by with one of these pumps for a month or two. Thanks
phillyboy is offline  
post #8 of 21 (permalink) Old 05-04-2009, 01:35 AM
TDG Mafia
 
Jeffybuilt's Avatar
 
Join Date: Dec 2008
Location: North Liberty, IN
Posts: 651
Points: 22,277
Thanks: 162
Thanked 76 Times in 57 Posts


Although I know they are not the best... I have been running a Holly Black 150 for a year and a half now with no problems. I dont have injectors, so I really dont fuel to heavily. The problem with these pumps is there is a lot of demand placed on them, and there is usually a decent sized pressure drop associated with them. For example, right now, I have mine set at 18.5 at idle, and under WOT it can drop to 14.5. I have been told the quality pumps (FASS/AirDog) will keep constant proper pressure under all throttling conditions.

To answer your question though, for a few months, you would be A-OK to run one of those pumps.

My truck wants to be a semi when it grows up...
Singles Club #247

TDG Mafia Member


Thanks To:

Certified Transmission, Mishawaka, IN
http://www.certifiedtransmissiononline.com/home-6.html

State Line Diesel, Edwardsburg, MI
(269) 663-8571
Jeffybuilt is offline  
post #9 of 21 (permalink) Old 05-04-2009, 06:31 AM
Senior Member
 
Join Date: Jan 2009
Location: Shingletown ca
Posts: 1,189
Points: 51,331
Thanks: 4
Thanked 63 Times in 59 Posts
Garage
I think it will last a little while but they can die in less than a month too. I went through 3 in a year and a half. the last 2 I ran a fuel filter before and they still didn't last. Best to save the cash if you can and drive your truck easy and not waste the 120 on a holley

01 quad cab 4x4, edge drag comp, 4" exhaust, fass 150, 250 ddps, Jefferson State compounds 683hp so vp 11.91. AMSOIL front to rear. now back to stock 95 fummins in the works
01quadcab is offline  
post #10 of 21 (permalink) Old 05-05-2009, 12:38 AM
2nd Gen Guru
 
Mopar1973Man's Avatar
 
Join Date: Dec 2008
Location: New Meadows, Idaho
Posts: 2,641
Points: 55,331
Thanks: 9
Thanked 140 Times in 131 Posts
Garage
Send a message via Yahoo to Mopar1973Man
Quote:
Originally Posted by 01quadcab View Post
I think it will last a little while but they can die in less than a month too. I went through 3 in a year and a half. the last 2 I ran a fuel filter before and they still didn't last. Best to save the cash if you can and drive your truck easy and not waste the 120 on a holley
Funny...

I ran 5 carter campaign pumps in less than 2 years... At nearly $120 to $150 a pop... I sure wish I got off my rear end and got a AirDog sooner.
Mopar1973Man is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel pressure & overflow valve pressure Deeslfxr 5.9L Cummins (1998.5-2002) 4 01-09-2009 11:35 PM
Setting fuel pressure regulator w/out a fuel pressure gauge hhrecovery 2003-2007 6.0L Power Stroke 17 04-02-2007 02:25 PM
Fuel Mods: X-over vs full fuel kit and pressure... bakantor 2003-2007 6.0L Power Stroke 39 03-10-2007 02:06 PM
$100 Off DJ's FUEL+ - Fuel Pressure Intensifier MOMBENZ Supporting Vendors Forum 3 12-13-2006 01:49 AM
anyone doing fuel pressure or oil pressure skinz0021 General Dodge Discussion 7 08-19-2006 02:42 PM

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome