i have a 2000 hyundai elantra 2.0 it acts like it has a miss to it?

[nichole c]

it acts like it jumped time to me tho but thats y iam asking when iput a code scanner on it itsaid that #4 was miss fireing but i checked the injecters, coil, wries,plug,all the wire end can't find nothing wrong

[Jonathan S]

If the computer is setting a P0304 (Cylinder 4 misfire detected), the Cylinder 4 IS misfiring. How did you check the injector? How did you test the coil? How did you test the plug? Did you check compression? Leak down? There is more than plugs and wires that make a cylinder fire correctly.