engine light is on on my 04 neon. changed coil but still on. it has a exhaust leak. code is p0300

Question

I replaced the coil but plugs and wires are good

Answer 1

HI there,

I would also check for intake manifold leaks and also check the fuel pressure. Either of these can give you the code for random or multiple misfire. This code really means the computer knows there is a misfire but can't determine which cylinder has the problem.