Noisy injector in GM LLY
My neighbor has a 20?? Duramax series LLY. All diagnostics are good injector balance perfect no codes etc. Idle/low cruise power settings quiet. Full throttle quiet. When the engine has to pull a b...
Forum Discussion
They're run at high pressure at mid throttle/rpm to help reduce emissions. That makes them more prone to noise. Sometimes additives or Biodiesel blends help. My LML injectors are a bit noisy on straight diesel but when I run B20 I can barely hear them.
