It ensures that the intake vacuum has the right amount of fuel vapors needed by the engine intake manifold. Your fuel tank creates vapors, and the main job of the purge is to prevent the latter from escaping. It is a part of the evaporative emission control (EVAP) system. What Is a Purge Valve? Part of the Evaporative Emission Control (EVAP) SystemĪlso called the canister purge valve, the purge valve is a small component with a critical function. This is because of the excessive accumulation of the vapors in the EVAP canister. If it has been a long time since the purge valve has sustained damage and failed to fix it, engine misfire is one of the potential consequences. The biggest risk is a carbon buildup, which results in emissions of toxic gases. However, if you already know that the purge valve is failing and you keep driving for days or weeks without addressing the issue, the problems will be evident. You can keep on driving until you reach your destination, and from there, you have the time to fix the issue. For instance, if you are in the middle of the highway and notice signs of a failing purge valve, it is not an urgent concern. In the short term, driving with a bad purge valve does not cause any immediate harm. ![]() Driving with a Bad Purge Valve – What Happens? Read on to determine what happens when driving with a bad purge valve and the signs of a bad purge valve. It can result in carbon accumulation and buildup. Nonetheless, the longer you do not attend to the problem, the more serious the consequences will be. What happens when driving with a bad purge valve? What are the signs and symptoms that it has problems?īelow are some of the most common signs of a bad purge valve:ĭriving with a bad purge valve does not cause immediate harm. ![]() Over time, it is prone to wear and can be a headache to deal with. ![]() The purge valve is a small but crucial component of your vehicle’s emission system.
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