Intermittent miss at Idle-1200 RPM - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 07-22-2013, 06:18 PM Thread Starter
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Intermittent miss at Idle-1200 RPM

Hey guys I am getting an intermittent miss at idle, and low rpm. Like I said it doesn't happen all the time, and seems to smooth out with RPM. Not DTC's logged. All signs point towards an injector, or harness. Engine was apart 2000 miles ago for STUD. Stock injectors 120k miles. Any input?

2004 350 SRW Supercab Longbed FX4
Mods:
ARP Studs
Black Onyx Gaskets
EGR Delete
XDP Coolant Filter
MBRP 4" Turbo Back
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post #2 of 11 Old 07-22-2013, 06:56 PM Thread Starter
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Guess I will check my FICM voltage tomorrow too.

2004 350 SRW Supercab Longbed FX4
Mods:
ARP Studs
Black Onyx Gaskets
EGR Delete
XDP Coolant Filter
MBRP 4" Turbo Back
SCT SF3 Programmer
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post #3 of 11 Old 07-22-2013, 06:59 PM
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Yes sir, check FICM, sounds like stiction though.

2004 F-250 Lariat CCSB

Studded, Deleted, Cold Air, Fog Light Mod,
IPR HF Coolant Filter, High Idle, Atlas 40 FICM,
CCV, Edge Insight CTS, ZooDad, BPD Oil Cooler,
4" Banks Monster Exhaust, Fumotos, 05 Harley Headlights,
Blue Spring, Kill Switch, 03 Turbo and 6.4 Banjo Bolts

VA Strokers
757 Diesel

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post #4 of 11 Old 07-22-2013, 08:51 PM Thread Starter
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What is a stiction?

2004 350 SRW Supercab Longbed FX4
Mods:
ARP Studs
Black Onyx Gaskets
EGR Delete
XDP Coolant Filter
MBRP 4" Turbo Back
SCT SF3 Programmer
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post #5 of 11 Old 07-22-2013, 09:05 PM
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It's a conjunctive form of static friction. For our injectors, it is simply pistons which stick in their bore, to a level which retards the initial movement. As said, static friction and dirt and debris that gets picked up can cause it. Recommed you use Rev-X and it should calm her back down. What kind of oil are you running?

2004 F-250 Lariat CCSB

Studded, Deleted, Cold Air, Fog Light Mod,
IPR HF Coolant Filter, High Idle, Atlas 40 FICM,
CCV, Edge Insight CTS, ZooDad, BPD Oil Cooler,
4" Banks Monster Exhaust, Fumotos, 05 Harley Headlights,
Blue Spring, Kill Switch, 03 Turbo and 6.4 Banjo Bolts

VA Strokers
757 Diesel

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post #6 of 11 Old 07-22-2013, 09:16 PM
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Search Stiction Revisited in the Perf section Stiction Revisited - including plunger stiction, or take the long read below in my sig. Rev X may do it for you in the long or short term, or not.

Frank
2007 F-250 Lariat Crew. MBM 190/50s,
KC-68 Stage 3 Turbo,
DashBoss/F/P, and a few other goodies
Stiction Problems - Fix it yourself! - http://www.powerstroke.org/forum/gen...ml#post4509754
Want to modify your injectors DIY - http://www.powerstroke.org/forum/6-0...ger-flows.html

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post #7 of 11 Old 07-22-2013, 09:21 PM
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Here is a link to a thread from two icebergs also, great info to thumb through. Stiction Problems - here is the fix - http://www.powerstroke.org/forum/gen...ml#post4509754

2004 F-250 Lariat CCSB

Studded, Deleted, Cold Air, Fog Light Mod,
IPR HF Coolant Filter, High Idle, Atlas 40 FICM,
CCV, Edge Insight CTS, ZooDad, BPD Oil Cooler,
4" Banks Monster Exhaust, Fumotos, 05 Harley Headlights,
Blue Spring, Kill Switch, 03 Turbo and 6.4 Banjo Bolts

VA Strokers
757 Diesel

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post #8 of 11 Old 07-22-2013, 09:25 PM
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Quote:
Originally Posted by twoicebergs View Post
Search Stiction Revisited in the Perf section Stiction Revisited - including plunger stiction, or take the long read below in my sig. Rev X may do it for you in the long or short term, or not.
Dang, already beat me to it!

2004 F-250 Lariat CCSB

Studded, Deleted, Cold Air, Fog Light Mod,
IPR HF Coolant Filter, High Idle, Atlas 40 FICM,
CCV, Edge Insight CTS, ZooDad, BPD Oil Cooler,
4" Banks Monster Exhaust, Fumotos, 05 Harley Headlights,
Blue Spring, Kill Switch, 03 Turbo and 6.4 Banjo Bolts

VA Strokers
757 Diesel

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post #9 of 11 Old 07-23-2013, 03:10 AM Thread Starter
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Thanks ya'll and I have only owned the truck for a month. But it has Rotella in it now. But it was always serviced at Ford so the majority of its life it was Motorcraft.

2004 350 SRW Supercab Longbed FX4
Mods:
ARP Studs
Black Onyx Gaskets
EGR Delete
XDP Coolant Filter
MBRP 4" Turbo Back
SCT SF3 Programmer

Last edited by SWMOoutdoorsman; 07-23-2013 at 03:13 AM.
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post #10 of 11 Old 07-27-2013, 07:51 AM Thread Starter
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Hey guys I have been running Rev X for about 300 miles, its not helping the issue. I wanted to add that this only occurs after the truck has been running for 30 plus minutes and is fully hot. It does not do this and it runs and starts well when it is cold. It has prolonged starts when it is hot intermittently, and a miss.

2004 350 SRW Supercab Longbed FX4
Mods:
ARP Studs
Black Onyx Gaskets
EGR Delete
XDP Coolant Filter
MBRP 4" Turbo Back
SCT SF3 Programmer
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