What are the symptoms of a faulty Wuling PCV valve?
3 Answers
Wuling PCV valve failure symptoms are as follows: 1. Increased engine vibration: If the ventilation valve remains constantly open, pressure from the crankcase is prematurely introduced into the intake system, causing unstable air intake and resulting in engine vibration. 2. Oil leakage: When the ventilation valve remains closed, excessive air pressure builds up in the crankcase, damaging the engine's oil seals over time and causing oil to seep through gaps in the engine block. 3. Abnormal engine stalling: Both constant closure and aging of the ventilation valve can lead to this issue, necessitating prompt replacement of the ventilation valve.
I've been using my Wuling car for several years. If the PCV valve fails, the car will shake and feel unstable at idle, as if it's about to stall, which is noticeable even when sitting inside. Fuel consumption also increases rapidly. Normally, a full tank can run 500 kilometers, but now it might drop to 450 kilometers. The power also weakens; there's less punch when accelerating, and it feels sluggish when climbing hills. The tailpipe emits black smoke with a foul smell, and opening the window for ventilation doesn't help. Sometimes, engine oil leaks from the engine compartment, leaving the ground wet and increasing the risk of fire. I suggest going to a professional shop for inspection immediately. Don't delay. Regular maintenance, including cleaning valve carbon deposits, can prevent major issues and ensure a more secure driving experience.
I enjoy tinkering with my car, and the symptoms of a faulty PCV valve are quite obvious: the engine shakes severely at idle, with RPM fluctuating up and down, making the car vibrate noticeably even at red lights; fuel consumption becomes alarmingly high, with the dashboard showing significantly more fuel usage than usual, draining my wallet; there's a noticeable lack of power output, struggling to accelerate even when flooring the throttle during highway overtaking; blue smoke emits from the exhaust pipe, with a foul odor, polluting the environment; carbon deposits inside the engine increase, and the engine oil turns black quickly, requiring timely replacement. I've checked for loose plugs and pipes myself, but for more complex issues, I turn to technicians—they can diagnose problems much faster with their equipment.
