What is your question?
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What is your question?
What does this running lean signal mean?? How do I go about repairing it? I'm trying to get my car to past smog
1 Reply
Running lean means that there seems to be too much air getting into the intake system, or not enough fuel is getting to the engine. Common failures for "lean" operation could be a faulty mass air flow sensor, heated oxygen sensor or an intake manifold air leak. Hands on troubleshooting with the ability to monitor how various components are functioning is necessary.