What are the symptoms of a faulty variable intake manifold?
2 Answers
The symptoms of a faulty variable intake manifold include reduced intake capacity, decreased engine power, insufficient air intake, and increased engine carbon deposits. Function of the intake manifold: For carburetor or throttle body fuel injection engines, the intake manifold refers to the intake pipe from the carburetor or throttle body to the intake port of the cylinder head. Its function is to distribute the air-fuel mixture from the carburetor or throttle body to the intake ports of each cylinder. Advantages of plastic intake manifolds: Lower cost and lighter weight. Additionally, since PA has lower thermal conductivity than aluminum, the fuel injectors and incoming air temperature are lower. This not only improves hot start performance and increases engine power and torque, but also helps avoid heat loss in the pipe during cold starts, speeding up the increase in gas temperature. Moreover, the smooth inner walls of plastic intake manifolds reduce air flow resistance, thereby enhancing engine performance.
I once experienced a faulty variable intake manifold while driving, and the car felt particularly sluggish, especially when climbing hills or accelerating at high speeds. The throttle response was slow, as if the engine was being blocked by something. At idle, the car shook violently and sometimes even stalled suddenly. There was also an annoying buzzing noise coming from the engine bay, which was quite irritating. This made my daily commute troublesome, and I was always worried about damaging other engine components, like the pistons or valves, so I had to rush to the repair shop for a check-up. Ignoring these small issues during routine maintenance can lead to bigger problems piling up. I recommend that car owners pay more attention to changes in driving performance to avoid unnecessary delays and expenses.