[richard2222]

Hi all,
i keep getting fault code p305 ( no5 cylinder missfire ). I have read loads of posts and as a consequence have changed the fuel filter, all 12 plugs and leads and no 5 coil pack, yet when i redline in tip 3rd gear only i still keep getting the same check engine code. Has anyone any ideas as to what else might be causing the fault.

Many thanks.

 

[Kobus]

Possibly a patially blocked injector that cannot deliver enough fuel under high demand. Try some Seafoam cleaner in your fuel tank.

 

[richard2222]

Hi, many thanks for reply, ive put some redex in the last 3 fill ups, but no differrence.so i thought i would look at the plugs on no 5 cylinder although new i bought two more to replace, when changing i did notice the plug lead cap on one wasnt pushed in properly so done that will take for and spin now and see what happens.