P0301 Mazda -

Question

changed spark pug and wires and coil still have p0301 code and misfire on mazda 626 1999 on cylinder 1. What els can I check thank you

Answer 1

P0301 Misfire number 1 cylinder

Check for mechanical condition, such as engine compression of number 1 cylinder.Pull the spark plug of the number 1 cylinder if its wet and satuarated with fuel low compression will cause this.