StandardGauge
New member
We all know the 6.4L is notorious for "making oil," and an internal high-pressure fuel line leak is usually the prime suspect. But since everything is buried under the valve covers, pinpointing the exact leak is a nightmare.
What’s your go-to diagnostic process? Do you swear by a UV dye test with a blacklight, or are you relying strictly on high-pressure rail snap tests and command logs via your scan tool?
What’s your go-to diagnostic process? Do you swear by a UV dye test with a blacklight, or are you relying strictly on high-pressure rail snap tests and command logs via your scan tool?
