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What is your question?
Tried vacuum hoses and EGR, intake manifold hose from air filter to intake is cracked, could that affect car not passing smog?
2 Replies
If your cracked hose has the crack after the mas air flow meter, it could be associated with the problem. Other things that contribute to NOx failure are: An overheated engine, lean air/fuel mixture, vacuum leaks, over-advanced timing, defective EGR system and/or carbon deposits on intake valves.
this vehicle does not use a mass air flow sensor.