What Causes a Manual Transmission Car to Lack Power When Going Uphill?

[LaGriffin]

Manual transmission cars may lack power when going uphill due to issues in the engine's fuel system or the engine's intake system. The fuel system is more prone to problems—clogged fuel injectors, leaking fuel lines, reduced fuel pump performance, or a blocked fuel filter can all lead to a lack of power when climbing hills. This happens because the engine does not receive sufficient fuel, resulting in reduced combustion efficiency and, consequently, a loss of power. Additionally, besides fuel, the engine requires air to operate. If components like the air filter or throttle body are clogged or malfunctioning, the engine's air intake may be insufficient. Inadequate air intake will also cause the engine to lose power.