Why does the Haval H6 experience jerking during acceleration?
4 Answers
The reasons for the jerking sensation in the Haval H6 are as follows: 1. Issues with the vehicle's engine spark plugs, causing delayed ignition: Over time, spark plugs can accumulate various carbon deposits. If the carbon buildup is excessive, the spark plugs may fail to ignite properly, leading to intermittent power loss during acceleration and resulting in a jerking sensation. 2. Clogged fuel injectors, causing fuel supply problems: The owner should check if the fuel injectors are functioning normally. Long-term use can lead to clogged fuel injectors, which can cause uneven engine power output. 3. Problems with the vehicle's throttle pedal: Generally, if there is a jerking sensation during acceleration, it indicates a serious issue with the throttle pedal. In this case, the owner needs to replace or repair the throttle pedal.
I've been driving this H6 for two years now, and recently I've been experiencing jerking issues during acceleration, feeling like someone is pulling it back. It might be the transmission's shifting logic not being very smart, especially noticeable when climbing hills at low speeds. During one maintenance check, severe carbon buildup was found on the spark plugs, and it got much better after replacement. Clutch wear can also cause this; my friend's car made a clunking sound when stepping on the gas. It's important to avoid heavy throttle in city traffic jams; driving gently can extend the lifespan of parts. Recently, after filling up with cheaper gas a few times, the engine sounded off, and it only smoothed out after switching back to 95-octane fuel. In such cases, it's best to promptly visit a 4S shop for a computer diagnostic to check for fault codes, as small issues can become more expensive to fix if left unattended.
I've repaired quite a few Haval vehicles, and the most common cause of acceleration hesitation is issues with the ignition system. If the spark plug gap is too wide or the ignition coils are aging, the engine won't run smoothly. Also, if the transmission fluid hasn't been changed for too long, it becomes viscous, leading to improper shifting timing. A throttle body caked with sludge, restricting airflow, can also cause jerky movements. Last time, a customer described the hesitation as 'riding a horse'—turned out to be worn-out engine mount bushings; replacing them fixed the issue. If the hesitation is particularly noticeable during rapid acceleration, it's likely due to insufficient fuel supply from the fuel pump. These issues are best diagnosed by a professional mechanic using a diagnostic tool.
Driving a manual transmission H6 for three years, I'm all too familiar with the jerking sensation. When the clutch plate wears thin, it starts slipping, especially noticeable during shifts between third and fourth gears. If the transmission gears clunk when you stomp on the gas, it's likely a synchronizer issue. Cold weather makes it worse, but warming up the car for five minutes helps significantly. During one maintenance check, two clogged fuel injectors were found - cleaning the carbon deposits immediately smoothed things out. After breaking the bad habit of riding the clutch, the jerking reduced by more than half. If this happens right after refueling, it could be impurities in the gasoline.
