p0300 random misfire

[black daliha]

I have a p0300 code wich is a random misfire i havnt had all these symptoms like other people have. I felt a chug like once while driving on the interstate I changed the spark plug wires and the coils have the same specs as a brand new one. Can anybody give me any idea what to look for it im not really feeling anything wrong?

 

[Spiced MSP]

Spark plugs themselves?

 

[black daliha]

k yeah i wanted to check mine i have some white markings on the ground strap of the plug and i cnt remember the part number but if they are not platnum then i need to swich to that

 

[BOOSTR]

Can also be caused by a vacuum leak, leaking EGR or bad gas. You can also use copper plugs. OE NGK Laser Platinums are stock no 3271. I've been using NGK V Powers stock no 4291 ever since replacing the original plugs that came with the car.

I'd put in some fresh plugs gapped correctly and reset the pcm.

 

[black daliha]

well found the culprit problem it is going into pre ignition wich meens more then likely carbon so i did the water steam treatment and will be putting in some carbon cleaner