Yes i did use oem ones

Buy a feeler gauge and check your spark plug gap.they can cause misfires if they aren't gapped.

It could be one of any variety of issues leading to low compression on that cylinder which would be worst when cold

P0300 in the mazda 3 indicates random multiple misfiring, which means that multiple cylinders are misfiring at the same.

It may be the wires, if they can't get the zap to the plug, the cylinder will most likely misfire

If plugs, coils and wires are all good, maybe.

I also had a misfire in one of my cylinders, i think it was cylinder 3, and turns out i had low compression on that cylinder

Learn the causes of p0303 cylinder 3 misfire detected, how to diagnose it with a.

Check engine light resulting in a p0303 code

Learn the real causes of a cylinder 3 misfire, repair costs, and how to.

Idling with the a/c on was just downright annoying

During this time, i thought maybe it was a clogged injector, since it.

This guide helps you diagnose and fix a cylinder 3 misfire—covering.