Hi guys,

Need the help of the experts. Our Hyundai Elantra jerks / kumakadyot during acceleration starting at 30km/hr. We brought it to Hyundai Quezon Ave. but they weren't able to solve the problem. We tried gassing up higher octane gasoline and even changed to Shell from Petron. A street-side talyer suggested changing the spark plugs and it worked... FOR A WHILE until we experienced it again yesterday. Any ideas what might cause this problem? TIA.