How to Match the Intake Manifold Flap of the Magotan?
2 Answers
Magotan's intake manifold flap, also known as the intake flap, can be matched as follows: 1. The Magotan is equipped with the EA888 engine, and the matching of its intake flap is mainly based on the engine speed signal transmitted by the crankshaft position sensor. 2. When the engine speed reaches the set value, the engine computer activates the solenoid valve circuit, opening the vacuum line to match the intake flap. The working principle of the intake manifold flap is as follows: 1. When the intake valve opens, air flows into the cylinder. Due to inertia, even after the piston reaches the bottom dead center, air continues to flow into the cylinder. If the intake valve is closed when the cylinder pressure reaches its maximum, the volumetric efficiency will be maximized—this effect is called the inertia effect. 2. To achieve optimal volumetric efficiency, both the pulsation effect and the inertia effect must be considered. This means that when the cylinder pressure reaches its maximum and the intake valve closes, the compression wave in the front intake manifold also reaches its highest position (peak). 3. A longer intake manifold provides higher volumetric efficiency at low engine speeds, resulting in higher maximum torque values. However, as the speed increases, both volumetric efficiency and torque values drop sharply, which is unfavorable for high-speed operation. A shorter intake manifold can improve volumetric efficiency at high engine speeds but reduces the maximum torque value and delays its occurrence.
Last time my Magotan had a similar issue where the intake manifold flap needed to be recalibrated—essentially resetting the positioning of that air control mechanism. I figured it out using an OBD scanner: first shut off the engine, plug into the diagnostic port, navigate to the system menu, and select the 'flap learning' function to initiate. The whole process takes a few minutes—just wait patiently when the tool screen shows 'Learning in Progress' until it prompts 'Success.' If mismatched, the engine might respond sluggishly, fuel consumption could spike, or even trigger a fault light. My advice: check the manual or search for model-specific tutorials online beforehand, prepare tools like a standard diagnostic scanner, and ensure the battery is fully charged to avoid system damage from mid-process power loss. Regular maintenance (e.g., cleaning carbon buildup in the intake) also helps prevent issues—post-calibration, the car’s acceleration felt noticeably smoother.
