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What Causes a Car to Lack Power When Climbing Uphill?

1 Answers

AnastasiaAnn

07/29/25 3:30pm

If the engine operates normally under no load but accelerates slowly under load, the car lacks power when climbing uphill, and even with the accelerator pedal fully pressed, there is still insufficient power, the engine speed does not increase adequately, and the maximum speed cannot be reached. The main causes of the fault are: (1) Clogged air filter. (2) Improper throttle adjustment, preventing full opening. (3) Fuel pressure too low. (4) Clogged or poorly atomizing fuel injectors. (5) Faulty coolant temperature sensor. (6) Faulty mass air flow sensor. (7) Incorrect ignition timing or weak high-voltage spark. (8) Low engine compression pressure.

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