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Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Controls And Fuel - 2.0L (LTG) - DTC P0335 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P050D: Cold Start Rough Idle (LTG) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Verify that the fuel pressure is not too low or too high - Refer to Fuel System Diagnosis .
    • If a condition is found, repair or replace components as necessary.
    • If the fuel pressure is OK
  2. Verify that the fuel is not contaminated - Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
    • If the fuel is contaminated, clean the fuel system - Refer to Fuel System Cleaning .
    • If the fuel is not contaminated
  3. Replace fuel injectors as indicated by high misfire counts.
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