Duramax “upgraded” the injection pump for the LML models, going from the Bosch CP3 to the CP4.2. To handle the additional power capabilities of the engine the fuel rail pressure was increased to 30,000psi. However, the pump actually flowed 20% less fuel than its CP3 predecessor. This makes the CP4.2 highly … Zobacz więcej One of the emissions additions to the LML was the inclusion of a selective catalytic reduction (or SCR) system as mentioned at the start of this article. SCR requires diesel exhaust fluid “DEF” to operate properly. … Zobacz więcej The goal of DEF and the SCR system is to reduce the amount of nitrogen oxide that enters the atmosphere via exhaust gases. The system has two NOx sensors: one before the DEF injection location and one after. The goal … Zobacz więcej If you’ve noticed a trend with the LML, it’s that the DEF systems are problematic. This was new technology at the time and was bound to have its fair share of issues. On the LML, the DEF system is equipped with a typical … Zobacz więcej Witrynapark or neutral. Injector balance rates outside of +4 to -6.9 indicate a problem with that cylinder or injector. 2. Use cap off tools to block off one injector at a time. 3. A slight knock can start occurring due to injector problems, often after a contaminated fuel problem. Surge or Lope at idle
Duramax years to avoid — most common problems REREV
Witryna2015 GMC Sierra 3500 HD SLT 6.6L (8 LML) 6-spd (1000) — 1GT423E83FF154705. Crank / No Start. Excessive Fuel Return. This one stalled while driving, and will not build enough fuel pressure to be measured by the Fuel Pressure Sensor. The priming pump will build pressure, but the pressure quickly bleeds off. It pulls 2 inHg while cranking. Witryna27 kwi 2024 · Hi Everyone long time lurker first time poster, I got a 2013 lml that started throwing a P02D7 - Cylinder 6 Fuel Injector Offset Learning At Max Limit. Checked … oil states piper valve oklahoma city
LML Duramax Problems [You’ll Be Stuck If This Happens!]
Witryna30 maj 2024 · The LML indirect (dosing) aka 9th injector delivers fuel to the exhaust system during regen. They have had issues and a bulletin, but have not been bad … Witryna12 gru 2024 · GM 98017958 is an Upgraded Harness Kit that solves injector chafing problems commonly associated with the LLY Duramax. 4. Water Pump Failure. … Witryna1 lut 2024 · GM had resolved the injector problems by the time the LLY engine was released. Instead of injector problems, the LLY had overheating issues when … my iphone display is dark