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How To Fix Chevy 1.4L Turbo P0171 Problem With Simple Diagnosis

Gm’s 1.4L turbocharged 4-cylinder engine, commonly found in the Chevy Sonic, Cruze and Buick Encore, has a well-known issue resulting in a lean code, P0171, and often times oil consumption and/or an engine whistle noise. This issue is often only partially repaired resulting in repeat failures. This video breaks down the process for diagnosis and repair. Enjoy! https://gotech.com/learn/how-to/fix-p... 0:00 Intro 0:27 Symptoms/trouble code 0:50 Proving its running lean 1:10 Testing PCV valve 2:47 Checking non-return valve 4:31 Removal of intake manifold and valve cover 6:57 RTV sealer location 7:28 Valve cover torque sequence 7:51 Intake manifold installation 9:11 Confirming fix 10:28 Summary