What are the symptoms of a faulty exhaust valve in a Haval H6?
2 Answers
When the car's exhaust valve is faulty, excessive exhaust gas is directed into the engine's cylinders, which will affect the normal operation of the engine. 1. Symptoms: If the exhaust gas recirculation (EGR) valve is stuck in the fully open position and cannot close completely, it will cause the engine to stall at idle or experience unstable idling. It may also result in the emission of large amounts of black smoke during engine operation. Moreover, once this issue occurs, it won't just produce black smoke but will also be accompanied by a decrease in engine power. 2. Impact: Particularly when the engine is idling, operating at low speeds with small loads, running at high speeds, accelerating or decelerating rapidly, or when the engine is cold, excessive recirculated exhaust gas will severely impact the engine's performance. This can lead to issues such as unstable idling, poor acceleration, increased fuel consumption, and insufficient power.
If the PCV valve fails on a Haval H6, the symptoms become very noticeable. I've experienced this firsthand - at idle, the engine shakes like a tractor, with noticeable vibration through the steering wheel, especially uncomfortable at red lights. Acceleration becomes sluggish, with delayed throttle response that makes overtaking feel risky. Fuel consumption spikes dramatically, potentially increasing from 9L/100km to 11L/100km, hitting your wallet hard. The most serious issue is oil burning, evidenced by blue smoke from the exhaust and rapidly dropping oil levels on the dipstick. Prolonged neglect leads to severe carbon buildup in the engine, resulting in much costlier repairs later. Getting it inspected and replacing the faulty valve promptly is absolutely crucial.
