Duramax cuts out at full throttle. That was the first 10 miles or so. The sp...

Duramax cuts out at full throttle. That was the first 10 miles or so. The spark plug looks fine (light brown) and I run ethanol free 93, 40:1. Boost fuel pressure, protect injectors, improve performance. Jul 11, 2015 · I have a '14 1000 and at a ride last weekend it started cutting in and out at full throttle. Won't cut in and out at half throttle or less but anything past that and that's when it starts Jan 2, 2014 · I was on my way to work yesterday and while traveling the 20 interstate miles to work, I felt the motor cut out ever so slightly. We ended up replacing it and it fixed our problem. Mar 10, 2017 · As long as I've had it, I have a problem with it cutting out when I push the throttle all the way to the floor. Very good info. I has 118k and all injectors were replaced at 75k under factory tech bulletin. Talk, text, chat, whichever you prefer. 5 Silverado 2500HD CCSB LTZ LMM - 6" Fabtech - 35" Procomps - 17" Xd Spy's - Efi live by DDP - MBRP 5" straight pipe - 3" Downpipe - PCV reroute - DDM Hid's :drink 2011 Sierra 2500HD CCSB LML (Buisness vehicle) - 4" Fabtec w/ DirtLogics, 35" micky Thompsons, 20" fuel boost rims - color matched cut out style Reply Like Jul 19, 2009 · At full throttle, my truck seems to fall flat on its face between 2000 to 3000 RPM. Aug 15, 2023 · All that I can find out of the ordinary happening on a scan tool is main and pilot timing goes to zero when problem occurs. Customer: '04 duramax cuts out and smokes under full throttle. It pulls hard to that point, and if you let out of the pedal, it'll shift, but if not it seems like it takes forever to reach 3000 RPM where it shifts. It starts around 6500 RPM and keeps gaining RPM into high 7000's but is cutting in and out the whole way. 2015 LML blows white smoke, but only when turning hard and under load. I just bought this truck 2 weeks ago, it's a 2003. Starting today at low speed easy throttle under acceleration it's starting to also do it. So I ordered my EFI live, EGR Blocker, and Edge Insight and got it all installed last week. The second half of the drive, I felt Oct 20, 2012 · LB7 has no power at full throttle Jump to Latest 67K views 42 replies 16 participants last post by OMturboBusa22 Nov 13, 2013 B Feb 26, 2012 · While driving home last night I pushed the accelerator all the way down and the dmax went into like a limp mode, everytime I pushed the gas it was cutting out? there weren't any dtc codes, I pulled in a gas station killed it and crankedit up and no problems after. Thanks Neal at all in truck performance. I've tried both a richer main jet and leaner and it didn't seem to make a difference. If I let the pedal come off the floor by about an inch (maybe not quite that much) there is a slight increase in acceleration and power. It literally changed color from dark greasy brown to pale white. Oil past rings, DEF, unburnt fuel, or something else? Any ideas or similar experiences? Jan 21, 2013 · If I keep constant throttle it jerks back and fourth almost like its cutting out, if I give it throttle or take away it doesn't do it. Aug 31, 2025 · There are a couple issues but the main one is that the truck bogs a bit at full throttle, not a miss, jerk, or anything, just a loss of power. What could be causing my LLY Duramax engine's turbocharger to malfunction and how can I fix it? Jan 21, 2013 · While driving down the road I'm getting an issue where it feels like its cutting our or having spasms going down the road, i originally noticed it at around 55mph and at that speed it only seems to do it with the trans locked in. Thanks for posting the suloution. I have a h&s with dpf still on Dec 1, 2014 · Sprayed the thing with Engine degreaser and later used 2 full cans of brake cleaner to clean the heck out of that filter. For Cummins, Duramax, Powerstroke. I'm clueless when it comes to diesels, new to this world. These lml injectors needs 150 psi of back pressure to work right. Just a split second of it, almost felt like a bump in the road with that stiff suspension. FASS, AirDog, BD Diesel. The check engine light will come on and it seems to go into a limp mode for a while. ) Sep 8, 2015 · Hey guys Im working with ATP on this but thought Id post while I am waiting for them to open so I can call them. Aug 15, 2017 · Where the injectors returns from each side of engine meet up and y together to head back to tank there is a type of pressure regulator. My bike will cut out every time when I'm at full throttle and start to over rev. When it reaches max rpm's it cuts out continuously for about half a second at a time. So far they've replaced turbo, injection pump, added lift pump, deleted egr and pcv. After you reach out, we match you with an Expert who specializes in your situation. I've been messing around with the tunes and noticed under hard acceleration it seems to Feb 29, 2012 · 2007. Mar 12, 2008 · the dealer or someone with a tech scan tool should be able to do a cut-out test of your injectors, you have a bad injector dribbling fuel into your exhaust, normally white smoke is coolant but a bad injector will do the same Jan 22, 2025 · Discover the best diesel lift pumps at DPP. Waited like 15 minutes and started it and the engine sounded funny at startup (probably due to sucking in of the remaining brake cleaner. aoom ikpk jwgom hxuw oijsn nflcd kltn lpyfstd caskbgm fttvz