I don't recommend using anything other than an actual spark plug socket to remove spark plugs because the socket centers the the spark plug when you are applying pressure to remove it or install it. Its also used to hold the spark plug onto the socket when you're putting the new spark plug into the tube without damaging the ceramic. I would pick one up at a local parts store. It shouldn't be more than $10 for a store brand one. Also make sure that you are using NGK spark plugs and wires. Hyundais operate best when used OEM equipment and prevents premature failure and proper operation. I just worked on a vehicle today that had a misfire and the customer replaced the wires and the spark plugs with brand new aftermarket ones. The brand was Autolite. After he replaced them, he still had a cylinder 1 misfire and brought it to the dealership. I removed the spark plugs and wires and found that the brand new wires had already started arcing causing a major misfire and the spark plug was covered in raw fuel from improper combustion. Not trying to scare you, but for some reason, Hyundai vehicles are very sensitive when it comes to using aftermarket parts. As for the throttle position sensor, it should be as easy as removing the old screws and installing the new sensor in the reverse order you removed the old one. While you're in that area, I would also take the time to clean the inside of the throttle body including the throttle plate and where the throttle plate sits. This will insure proper throttle response.
Wednesday, July 8th, 2015 AT 4:48 PM