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Old 11-11-2012, 07:48 PM
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Injectors???

Hey guys, I've recently had a weird kind of flutter in my truck while under load and it only happens when the truck is not up to operating temp. Had some rough cold starts and added Rev-x on my last oil change that helped a little with the cold starts but didn't fix my problem. Changed FICM and now I'm tired of guessing what's causing this. Any suggestions? My truck has 201k on it and is studded, tuned by Eric at IDP, Zoodad, blue spring, and full EGR delete.
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Old 11-11-2012, 08:24 PM
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You need it scanned on live data and a data log run by someone who knows the 6.0.
Guessing can get real exspensive real fast.
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Old 11-11-2012, 08:26 PM
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Explain what you mean by flutter.

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Old 11-11-2012, 08:26 PM
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Yes it can! Sure don't want to replace injectors if that's not the case.
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Old 11-11-2012, 08:28 PM
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When I excelerate it sounds like its not getting the fuel it needs. It doesn't shake the truck but you can def hear it in the exhaust tone.
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Old 11-11-2012, 08:31 PM
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How does your fuel filter look? Do you have a full pressure gauge? If your ficm is giving 48 volts you either have a fuel pressure problem or bad injector(s) more than likely.

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Old 11-11-2012, 08:34 PM
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Never checked out my fuel filter. Just changed it last week with my oil and oil filter as well. Don't have a fuel pressure gauge. My sct 3015 has data log capabilities but I'm not versed in all those numbers....
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Old 11-13-2012, 05:12 AM
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funny you mention this, mine is doing the exact same thing. just started two days ago. Once it gets to full operatin operating temp it clears up though... Still on stock FICM and due for filter change.
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Old 11-13-2012, 07:25 AM
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Last time it did this I cleared it up switching to 5w-40 synthetic and ended up buying a FICM half shell that I don't think I needed. It's just a hard symptom to diagnose on these trucks... If you find out anything please let me know.
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Old 11-13-2012, 10:53 AM
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I'm going to order a BPD FICM tonight when I get home from work. Spoke to a Gear head at the local shop and he advised me to DO IT. rather spend $600 on the FICM (Which will eventually fail) instead of new injectors. Ill let you know how it turns out after i get in and installed.
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