What Happens When a Car's Carbon Canister Solenoid Valve Fails?
1 Answers
Here are the consequences of a failed carbon canister solenoid valve in a car: 1. Engine hesitation when accelerating, with a strong fuel odor inside the cabin. 2. Erratic engine acceleration with noticeable power loss. 3. Engine stalling or difficulty starting. Since the faulty valve remains constantly open, the intake manifold becomes saturated with fuel vapors, leading to an overly rich air-fuel mixture during startup, which can cause hard starts or even stalling. 4. Increased fuel consumption. The excessively rich mixture results in incomplete combustion, prompting the engine ECU to compensate by leaning out the fuel mixture, ultimately raising fuel consumption. 5. Air leaks may occur in the vehicle. 6. Disruption of normal engine operation. A constantly open valve causes hard starts, while a constantly closed valve leads to fuel vapor leakage.