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post #1 of 36 Old 11-13-2012, 08:01 AM Thread Starter
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rough runnins!

I've got a 2006 f-350 with head studs delete kit and more. I recently had installed the loony wild. But after running it for about two weeks my truck has a miss. I don't think it has anything to do with the tune. I've checked the ficm and it was at 47.5 running and i checked the injectors and they past the test.i thought maybe fuel related so i replaced the fuel filters and added stabilizer any suggestions?
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post #2 of 36 Old 11-14-2012, 02:54 AM
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Do you know what fuel pressure you are running at? Have you upgraded your fuel spring yet? Do you have the ability to monitor the FICM voltage while you are driving?

2003 Excursion Limited 6.0 2wd
Transmission built by Ace Transmission Repair / ECM tunning by Quick Tricks / FICM tunning by Power Hungry Performance / No Limit Fabrication Coldside Intercooler Kit / Performance Machine MFG EGR Delete / Performance Machine MFG Coolant Filter / GoGo Diesel direct clutch solenoid / AFE Stage II Intake / Ford Blue Spring / 6.4 Banjo Bolts / Zoodad / 1.5" front sway bar by Hellwig / Ford 30mm rear sway bar
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post #3 of 36 Old 11-14-2012, 05:03 AM Thread Starter
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No no and no lol right now we think it maybe a clogged injection. So i put in two quarts of hot shot secret. I work for the next two days straight so i won't be able to do much until Friday. Now what spring are you talking about?
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post #4 of 36 Old 11-14-2012, 04:50 PM
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I am speaking of the Ford blue fuel pressure spring. I would think that if the truck had been studded and deleted it would have been done too but without being able to monitor fuel pressure it is impossible to say for sure.

2003 Excursion Limited 6.0 2wd
Transmission built by Ace Transmission Repair / ECM tunning by Quick Tricks / FICM tunning by Power Hungry Performance / No Limit Fabrication Coldside Intercooler Kit / Performance Machine MFG EGR Delete / Performance Machine MFG Coolant Filter / GoGo Diesel direct clutch solenoid / AFE Stage II Intake / Ford Blue Spring / 6.4 Banjo Bolts / Zoodad / 1.5" front sway bar by Hellwig / Ford 30mm rear sway bar
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post #5 of 36 Old 11-15-2012, 07:14 PM
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Do the injectors miss when slowing down(downshifting) and at idle....or all the time??


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Nathan -- Georgia Powerstroke Diesel Association
'04 CCSB FX4 with some go-go parts from the performance section of AutoZone
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post #6 of 36 Old 11-15-2012, 07:25 PM Thread Starter
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All the time. I am running hot shot secret right now. Butif this don't work Im going to try revx.
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post #7 of 36 Old 11-16-2012, 06:59 AM Thread Starter
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I drove the truck this morning and it seems its getting worse. It has a miss in it while driving it. It also has the miss while in cruise control.
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post #8 of 36 Old 11-16-2012, 08:28 AM
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It really sounds like injector or FICM based in my limited experience. You could have a failing fuel pump as well.

2003 Excursion Limited 6.0 2wd
Transmission built by Ace Transmission Repair / ECM tunning by Quick Tricks / FICM tunning by Power Hungry Performance / No Limit Fabrication Coldside Intercooler Kit / Performance Machine MFG EGR Delete / Performance Machine MFG Coolant Filter / GoGo Diesel direct clutch solenoid / AFE Stage II Intake / Ford Blue Spring / 6.4 Banjo Bolts / Zoodad / 1.5" front sway bar by Hellwig / Ford 30mm rear sway bar
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post #9 of 36 Old 11-16-2012, 09:35 AM Thread Starter
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We are fixing to hook it up to the ford tool and test the ficm again. Only this time were going to drive it. Last time we checked it in the off position and at idle.
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post #10 of 36 Old 11-16-2012, 09:41 AM
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also do an injector buzz test while youve got the scanner hooked up. See if the injectors will show any miss on the scanner.....if the injector is bad (more than likely spool valves) it'll show a -(number) i.e. -18

Nathan -- Georgia Powerstroke Diesel Association
'04 CCSB FX4 with some go-go parts from the performance section of AutoZone
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