Close

Q: My car will randomly jerk while I'm driving it. what could it be? on 1994 Hyundai Excel

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
My car will be working fine and then all of a sudden it seems like it "slips" out of gear and will start deccelerating even though my foot is on the gas. Then it will seem to catch and jerk as its catching. Sometimes it will happen while switching gears, sometimes it will happen while I'm in gear. It's very random. It will do it at high speeds, low speeds, average speeds, warmed up or cold, in Economic or Normal gas input. We have put in new transmission fluid, new oil, changed the fuel filter, changed the one of the fuel caps, had the transmission checked, and some other stuff I can't remember. None of it fixed the problem
(1) Answer
It seems that your spark plug is on the side of high gap between spark plug body and contact point area for ignition.
Please change spark plug or maintain the gap between spark plug i.e .003 inch