Question
What causes automotive diesel injector return line "clogging"?
Answer
Fuel contamination and carbon buildup.
Explain
Clogged lines increase injector pressure. CHEPQ recommends using filtered diesel and periodic line flushing—preventing clogging and ensuring proper fuel return.
Related Diagnostic Guide
To explore this topic in a broader system-level diagnostic context:
Related Guide: OBD-II, DTC & Live Data Analysis
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