When idling, the exhaust pipe will have a "chug" sound every few seconds.

Hello: Thank you for your consultation! When you say "jerk" and "slight back and forth shaking", you should mean that the engine is unstable. Tianyu has variable intake valve timing system (vvt). If there is a fault within this range, check the variable valve timing system. This kind of fault should be repaired in time, which will affect the engine performance after a long time. I hope the above answers will help you, thank you! Beijing North Xinxing Changan Suzuki 4s shop maintenance telephone number 0 10-63287800.