What to do if the Haval H1 lacks power?
2 Answers
Regularly perform maintenance according to the official maintenance manual, including changing engine oil, oil filters, cleaning or replacing air filters, and replacing oil filters. Check whether the throttle valve has carbon deposits, whether the intake manifold leaks, and whether related sensors malfunction. Engine overheating can lead to poor lubrication effects, increased mechanical wear, reduced engine power, and higher fuel consumption. Regularly check the levels of engine oil and coolant. Do not mix different types of engine oil or use water as a substitute for coolant.
I also experienced sluggish throttle response when driving my Haval H1 before. It was particularly noticeable when climbing hills—the engine would roar but the car wouldn't accelerate. Later, I discovered the air filter was clogged like a rag, and replacing it immediately restored power. Here are key items to check regularly: inspect the air filter for dirt (replace if over 20,000 km); worn spark plugs with blackened electrodes can cause weak ignition; a clogged fuel filter leads to insufficient fuel supply and limp acceleration; and a blocked exhaust system or catalytic converter feels like a choked throat. Also, long-term use of cheap gasoline causes carbon buildup—occasional highway driving or fuel additives help clean deposits. These checks can be done DIY; if issues persist, visit a repair shop to scan for trouble codes.
