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01-15-2018, 01:49 PM
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#1
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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2003 popping/backfire sounds under heavy acceleration
I made a trip from Houston to California hauling 16k.. 10 miles from my destination. My truck started popping really bad around 1800+ rpms
__________________
96 dually....money pit
2007 dually work... also money pit
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01-15-2018, 01:56 PM
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#2
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Name: zfaylor
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Nov 2010
Location: P-TOWN!, Indiana
Member`s Gallery
Posts: 5,024
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rail pop more than likely. Able to monitor rail pressure?
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2015 half ton heavy chevy
81 Fairmont LS project
Many yard ornament projects...
North American Turbo
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01-15-2018, 09:27 PM
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#3
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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Quote:
Originally Posted by zfaylor
rail pop more than likely. Able to monitor rail pressure?
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No I don’t have anyway to check it out here?. Any idea what could cause this? Could it be a bad relief valve? Or bad cp3 ?
__________________
96 dually....money pit
2007 dually work... also money pit
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01-16-2018, 06:58 AM
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#4
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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Could be lift pump, fuel filter, CP3, or the rail relief valve. Easiest thing to check first is the lift pump. Either way, it is something causing a drop in rail pressure. I will say, it is very seldom a bad CP3.
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@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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01-16-2018, 08:50 AM
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#5
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Name: ramthiscummins
Title: Too Much Time
Status: Not Here
Join Date: Sep 2010
Location: Canada EH!
Member`s Gallery
Posts: 589
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Quote:
Originally Posted by Cummins12v
I made a trip from Houston to California hauling 16k.. 10 miles from my destination. My truck started popping really bad around 1800+ rpms
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Any tunes on the truck?
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2003 QCSB cummins, DDP 12mm CP3, DDP SM 150% overs, a turbo, Firepunk diesel 48re
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01-16-2018, 11:36 AM
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#6
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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Has banks 6 gun
__________________
96 dually....money pit
2007 dually work... also money pit
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01-16-2018, 08:14 PM
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#7
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Name: RandomHero
Title: Unstoppable Diesel
Status: Not Here
Join Date: Apr 2015
Member`s Gallery
Posts: 107
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Where are you currently? Maybe a local member could be of some help?
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'04.5 QCSB, 6.4L, Billet 48re, Steed Speed, BW S369/S488, Wagler, Dynomite Diesel Products, PTP, PPE, Fass, ARP, Fleece, Synergy, HP Tuners by Silver Bullet Tuning
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01-16-2018, 08:50 PM
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#8
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Name: Tobin
Title: 5.7 IDI Powaa!
Status: Not Here
Join Date: Oct 2008
Location: Oviedo, FL
Member`s Gallery
Posts: 1,505
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Quote:
Originally Posted by Cummins12v
Has banks 6 gun
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Is it easy to take off? I would remove that first.
__________________
2006 Dodge 2500 QCLB 4x4 Goerend 48RE
1977 F250 RCLB 4x4 "High Boy" 12 valve, 180 pump, 5x.014, S363/S475, Goerend 47RH, NP271, 2007 D60/Sterling 10.5, 40" Toyo MTs
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01-17-2018, 06:38 AM
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#9
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Name: Red Sleeper
Title: Too Much Time
Status: Not Here
Join Date: Aug 2009
Location: Lone Star State
Member`s Gallery
Posts: 4,595
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Quote:
Originally Posted by Tobin
Is it easy to take off? I would remove that first.
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Not difficult at all to unplug the modules and leave wiring all in place. We've removed the entire harness on dads truck a few times to diagnose different issues. That is a more difficult process.
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Nick J
'14 Silverado LTZ 5.3 4wd
'05 Cummins QCSB 4wd 48re
'91 Cummins w350 5spd
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