According to recent media reports, Maruti Suzuki would recall large number of Swift Dzire compact sedans due to faulty fuel pump components. (rediff.com)
This covers several possibilities like leaky fuel injectors, fuel leaks in the fuel lines, faulty fuel pump check valve or faulty fuel pump accumulator. (mechanics.stackexchange.com)
It can also mean that you have an air leak between the MAF sensor and the throttle body, a faulty intake air sensor, faulty manifold air control system solonoid, an exhaust or inlet manifold leak, a PCV valve or hose leaking air, a faulty fuel pump delivering low pressure, or a partially blocked fuel filter restricting flow of fuel, faulty injectors, secondry air system not shutting off completely and allowing an air leak. (mechanics.stackexchange.com)