LML crank No Start After Rebuild - Chevy and GMC Duramax Diesel Forum
Jun 18, 2023 · I’m between 430-450psi in all cylinders as well, did a manual compression test after completing the rebuild. I’ve got fuel at every injector, cracked all lines multiple times to make sure I …
Post CP3 swap - won't stay running p0087 - DuramaxDiesels.com
Mar 1, 2018 · I have a set of injectors ready to go in but I'm just looking to be sure that I'm not wasting time doing injectors if somebody else has had this problem. Or if anybody has an idea on any other …
CP3 Conversion on LML - Tune Help Needed - HP Tuners Bulletin Board
Jan 29, 2025 · When I flashed it, there's two issues: 1.) The truck can't seem to maintain desired rail pressure. I get the P0087 low rail pressure code, and if you try to crank it after driving for a bit it has …
Hey guys. Got a 2011 LML Duramax just did cp3 swap and the
Is it just dying on you when you push the throttle? The o-ring on the fuel filter goes out and will cause the truck to flat out die when you touch the throttle. If there are any leaks in the fuel lines causing air to …
2011-2016 LML Duramax Performance & Tuning - Facebook
Jan 13, 2026 · I have a 2015 lml and I am wondering what kind of cp3 is the best and if you have to get your truck retuned after swapping it and if so what is the best tuner.
Most Common LML Duramax Problems (2011–2016)
Discover the most common 6.6L LML Duramax problems (2011–2016 Chevy Silverado HD & GMC Sierra HD). Learn symptoms, fixes.
GM LML Duramax Diesel Problems, Symptoms & Fixes
With 397 hp and 765 lb-ft of torque, it’s one of the strongest pre-L5P diesels — but the CP4 pump failure, emissions-related issues, and DEF system problems make the LML one of the most …
The 4 Most Common Duramax LML Engine Problems
Jan 9, 2021 · The buzzkill of the LML is the CP4.2 injection pump. Outside of this problem, there aren’t many major or costly common problems associated with the engine. Fortunately, there are some …
So you just bought a LML Duramax, and you're curious if it has been …
You just bought a 2011-2016 LML Duramax and you aren't sure what the previous owner/s did as far as modifications. You commonly see posts in forums about CP3 Conversions and you are wondering if …
LML Duramax CP3 Conversions - S&S Diesel Motorsport
S&S Diesel Motorsport®, the world leader in common-rail diesel injection has developed a solution for CP4.2 high-pressure pump failures that have plagued the LML Duramax engine.