Fuel pressure spikes - Dodge Cummins Diesel Forum
- HOME - FORUMS - GARAGE - TECH - ARTICLES - CHAT - CLASSIFIEDS - REVIEWS - VIDEOS - MEMBER MAP - STORE - INSURANCE -
- REGISTER - CALENDAR - INFO - SITE HELP - RULES - STAFF - MEMBERSHIP - ADVERTISE - CONTACT US -


Welcome to the Dodge Cummins Diesel Forum, the fastest growing Dodge Diesel Community on the internet.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us
Go Back   Dodge Cummins Diesel Forum > 4th Generation 2010 and up 6.7 Liter Cummins > 4th Gen Performance Parts Discussion
4th Gen Performance Parts Discussion Discussion of Performance Parts For the 4th Gen Trucks...NO ADVERTISING

CumminsForum.com is the premier Dodge Diesel Truck Forum on the internet. Registered Users do not see the above ads.

Auto Insurance

» Featured Product
Wheel & Tire Center

Closed Thread
 
LinkBack Thread Tools Display Modes
Old 01-11-2013, 05:56 PM   #1 (permalink)
Diesel Freak
 
nickboyer92's Avatar
 
Join Date: Feb 2011
Posts: 557
Thanks: 35
Thanked 59 Times in 51 Posts
iTrader Score: 0 reviews
Fuel pressure spikes

When in around half throttle I let off the gas pedal and sometimes I see my fuel pressure on the mini max go from 4 to 18 to 5 to 20 it looks like mountains on the graph. Any ideas?
__________________
2011 6.7 QCLB 3.73's H&S mini-maxx Tow-Mode Timing#2-NO-ATT, H&S OD software,Sinister-EGR, 5' AFE Turbo back, s&b CAI, 20' Fuel Full Blown white wheels, 35' Trail diggers, 2014 39' Torque 325 toy hauler
nickboyer92 is offline   Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-12-2013, 03:01 AM   #2 (permalink)
Diesel Freak
 
nickboyer92's Avatar
 
Join Date: Feb 2011
Posts: 557
Thanks: 35
Thanked 59 Times in 51 Posts
iTrader Score: 0 reviews
Anyone else notice this while monitoring there fuel pressure through mini maxx ???
__________________
2011 6.7 QCLB 3.73's H&S mini-maxx Tow-Mode Timing#2-NO-ATT, H&S OD software,Sinister-EGR, 5' AFE Turbo back, s&b CAI, 20' Fuel Full Blown white wheels, 35' Trail diggers, 2014 39' Torque 325 toy hauler
nickboyer92 is offline   Quick reply to this message
Old 01-12-2013, 10:52 AM   #3 (permalink)
Cummins Nut
 
Join Date: Jun 2011
Posts: 320
Thanks: 52
Thanked 62 Times in 41 Posts
iTrader Score: 0 reviews
Mine used to hang up after a full throttle run, and would lope at a stoplight b/c the pressures were spiking from 4.3Kpsi to about 7. Ended up being a FCA. Check that with a known good one first (I think it's a T25 three bolt pattern).
Drake_Lawdawg is offline   Quick reply to this message
Old 01-12-2013, 11:00 AM   #4 (permalink)
Cummins Fan
 
Join Date: Jul 2011
Location: Parkersburg, WV area
Posts: 80
Thanks: 0
Thanked 6 Times in 6 Posts
iTrader Score: 0 reviews
Yes, mine does it too. Also does it on shifts and then some other times just cruising. Here is link to my previous post.
Fuel pressure spikes normal?
__________________
2011 Black pearl 3500 crew cab short bed, 373 auto Not stock now. MM, Foldacover tonneau. 305-70/17 Terra grapplers.
Drgnrdr is offline   Quick reply to this message
Old 01-12-2013, 01:40 PM   #5 (permalink)
Diesel Freak
 
MudnRox's Avatar
 
Join Date: Jul 2010
Location: Olathe Ks
Posts: 680
Thanks: 75
Thanked 121 Times in 106 Posts
iTrader Score: 0 reviews
Its normanl. My has always done it. Try to let off the throttle gradually and it will not spike so much. Think about what is happening . When you are on the throttle fuel is flowing at a required rate. Once you close the throttle the fuel is still in the line and flowing for a few seconds before the fuel is shut off or decreased to a lessor flow. That is where the spike comes from. That's the way it was explained to me. Hope this helps.
__________________
2010 - 2500 SLT; CCSB; 4x4; 6.7L; 3.73 LSD; H&S - Mini Maxx w/OD; Rail Plug; MCC Tuning by Dave Matthews; SUNCOAST- Billet Mega 68; II - SB66(66/74/14), 100hp Nozzles; FLOOR IT - CP3 Kit; ATS - 3rd Gen. Manifold; SHIBBY - Stage II Horn, GHD w/Re-locator, Boost Tube; ARP - 425s; FLOPRO - 4" Turbo Back w/Hushpower muffler; FASS - Titanium 150; S&B; DAYSTAR - 2" Level; BILSTEIN - 5100s; PSC - SBS; K&N CCV Breather; PIAAs; ISSPRO - EV2 4th Gen; TOYO - AT IIs 35x12.50x17.
GONE....but not forgotton
MudnRox is offline   Quick reply to this message
Old 02-15-2013, 12:30 AM   #6 (permalink)
Diesel Freak
 
nickboyer92's Avatar
 
Join Date: Feb 2011
Posts: 557
Thanks: 35
Thanked 59 Times in 51 Posts
iTrader Score: 0 reviews
I understand the initial spike but it's about 6-10 or more of the 4ksi-20ksi +/- spikes.
__________________
2011 6.7 QCLB 3.73's H&S mini-maxx Tow-Mode Timing#2-NO-ATT, H&S OD software,Sinister-EGR, 5' AFE Turbo back, s&b CAI, 20' Fuel Full Blown white wheels, 35' Trail diggers, 2014 39' Torque 325 toy hauler
nickboyer92 is offline   Quick reply to this message
Sponsored Links
Advertisement
 
Closed Thread

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Dodge Cummins Diesel Forum 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:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

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


Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 12:36 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

SEO by vBSEO 3.3.2