what could be wrong with it

Question

i have changed the plugs and wires and fuel filter and it is still reading po300. what else could it be.

Answer 1

P0300 Random misfire

P0302 Misfire number 2 cylinder

P0303 Misfire number3 cylinder

When you get a random misfire code this just mean more that one cylinder are not contributing, so there is a misfire on number 2 and 3 cylinder automaitcally you will code P0300. 2 and 3 cylinder are next to each other so this can be a mecahnical condition which should be investegated by doing a compression test or a leak down test. If the cylinder are good, this leaves you wilth the ignition coil.as being faulty.coil number 1 controls cylinder number 2 and cylinder number 3.More than likely this would be the cause and a ignition coil will be the solution, Very unlikely this would be a faulty fuel injector of number 2 and 3.