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Old 03-20-2018, 09:31 PM
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Default On going miss at highway speeds.

I recently rebuilt my truck and have an ongoing issue that i cant solve. Here is a list of mods:

Full rebuild 7k miles ago, full fuel system with 1/2" fuel lines, 6.7 pump, diy regulated return with just redone 190/75% warren injectors. 5/40 scheffers oil, new ipr, hpop, ebp, main harness, glow plugs, cooler among other stuff. Ficm shows 49 volts.

I have no codes, warren tunes with a 6 speed. Runs great but after 30 minutes of driving, its like the turbo vanes flutter and i get a small miss. Its not horrible but i have no idea what else to check. If i hold at a steady rpm and load, its like the vanes constantly change. I also get this small miss/skip in the motor. Only can tell above 50. If i mash the pedel it goes away. Also when i coast and then get back into the throttle above 2k rpm it seems like the injectors get louder compared to a load going uphill.

Im sorry for the long post but i have redone everything and still have the miss/skip. Injectors were completely rebuilt. Any ideas at all???? Im about done with this truck, its not terrible, but drives me crazy going anywhere in it....

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  #2  
Old 03-20-2018, 09:48 PM
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Broken stand pipe?
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04 cclb IDP and TSD tunes, KC Stage 2 hi pressure, S476 atmosphere, Odawg Stage 2 ported intake, RCD Stage 1 cam, RCD lifters and pushrods, RCD 120# valve springs, ARP 625s, o ringed heads, Warren 7mm 250/100 hybrids, Strictly bowl dereete regulated return, Air Dog 2 4g, Snow stage 2 water/meth
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Old 03-21-2018, 03:00 AM
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I guess i could check, it starts fine, so its not leaking oil back down. They were all updated 2 years ago with stc fitting.

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2005 6.0 CCSB ZF6 190/75 warrens, 03 turbo, warren tunes. :thumbsup
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Old 03-21-2018, 06:40 AM
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Ive haf a few that run fine and start fine, but break up at certain conditions. Usually its a bit higher in the rpm, but you never know. And i think it was a year, year and a half ago or so when it was real common to have them break.
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04 cclb IDP and TSD tunes, KC Stage 2 hi pressure, S476 atmosphere, Odawg Stage 2 ported intake, RCD Stage 1 cam, RCD lifters and pushrods, RCD 120# valve springs, ARP 625s, o ringed heads, Warren 7mm 250/100 hybrids, Strictly bowl dereete regulated return, Air Dog 2 4g, Snow stage 2 water/meth
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Old 03-21-2018, 09:13 PM
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When u remove them should they just be one solid piece?

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Old 03-21-2018, 09:53 PM
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Sometimes they will come apart in 2 pieces, but there is an o ring on the bottom and middle of the top piece. When they break, it is like there is a sleeve on it, or it will break in the check valve area
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04 cclb IDP and TSD tunes, KC Stage 2 hi pressure, S476 atmosphere, Odawg Stage 2 ported intake, RCD Stage 1 cam, RCD lifters and pushrods, RCD 120# valve springs, ARP 625s, o ringed heads, Warren 7mm 250/100 hybrids, Strictly bowl dereete regulated return, Air Dog 2 4g, Snow stage 2 water/meth
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Old 03-22-2018, 11:43 AM
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I ordered warrens hi flow stand pipes. Ill report back whether it fixxed the problem or not

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Old 03-22-2018, 11:54 AM
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is it a miss under acceleration?, or more of a chugging? i see you swapped to the 03 turbo, just curious if you have a vgt solenoid going out. not sure if you have monitored duty cycle, or icp, ipr etc.
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Old 03-31-2018, 02:16 AM
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Ive got warrens hi flow pipes wanting to go in. Yes im looking at the vgt solenoid too. Its on a 45 mph and above just easy driving. If i tack the gears out it doesnt. But if im going down a grade and im in a lower gear, when i get back nto the throttle, the injectors are loud compared to going up a hill with a load on the motor.



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Old 04-25-2018, 02:53 AM
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It was a broken stand pipe. New ones in. Warren's are really good quality.

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