What are the symptoms of a broken intake manifold?

[EvelynAnn]

Symptoms of a broken intake manifold mainly include air leakage due to cracking, which can result in high idle speed, weak acceleration, and stalling during acceleration. Severe cracking may prevent the engine from starting. Below is a detailed introduction to the intake manifold:1. For carburetor or throttle body fuel injection engines, the intake manifold refers to the air passage from the carburetor or throttle body to the cylinder head intake port. Its function is to distribute the air-fuel mixture from the carburetor or throttle body to each cylinder's intake port.2. For port fuel injection engines or diesel engines, the intake manifold only distributes clean air to each cylinder's intake port. The intake manifold must distribute the air-fuel mixture or clean air as evenly as possible to each cylinder. To achieve this, the length of the gas flow passages in the intake manifold should be as equal as possible. To reduce gas flow resistance and improve intake capacity, the inner walls of the intake manifold should be smooth.3. If the intake manifold is damaged, it will cause air leakage, reduced gas pressure, and weakened intake capacity, leading to decreased engine power. Insufficient air intake can also increase carbon buildup.