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I have a question to all car experts here and need your advice.

My Waja has been very faithful and little problem until recently. I noticed that when driving under normal conditions, suddenly the car will be jerking, with experience like loss of power. Full press of the accelerator will may the car jerking more, and light press (of accelerator) will be less jerking, but the problem is still there.

Strange thing is this problem only occurs when the fuel gauge shows that there is 1...