What Causes High RPM in a Sedan?
1 Answers
Potential causes for high engine RPM include sudden throttle opening, fuel injector leakage or clogging, insufficient engine power output, etc. The exact cause can only be determined through inspection and diagnosis. It is recommended to visit a repair shop for professional inspection and handling. Analysis of high engine RPM causes are as follows: 1. Throttle assembly malfunction: The throttle is a controllable valve regulating air intake into the engine. After entering the intake manifold, air mixes with fuel to form combustible mixture for combustion. If the throttle malfunctions, causing sudden opening, it may result in abrupt RPM increase. 2. Fuel pump and fuel system issues: Fuel injector leakage or clogging may cause excessively rich or lean mixture, leading to poor cylinder performance and unstable idle.