What Causes the Feeling of Insufficient Fuel Supply When Accelerating?

[DelValentina]

Experiencing insufficient fuel supply when accelerating is mostly due to issues with the powertrain system. The specific reasons are as follows: 1. If the throttle valve malfunctions or the intake pipe is blocked, it can lead to insufficient air intake. A faulty throttle valve affects its opening and closing degree, while carbon buildup in the intake pipe directly impacts the air intake volume. Reduced air intake affects the combustion efficiency of gasoline, resulting in delayed acceleration. 2. Carbon buildup in the fuel injector or a clogged fuel line affects the fuel intake into the cylinders. Carbon deposits in the fuel injector reduce the amount of fuel sprayed, while a clogged fuel line directly limits fuel intake or causes insufficient fuel supply. Inadequate fuel intake disrupts the air-fuel ratio in the combustion chamber, leading to incomplete combustion.