I need to know how to fix p0300 I have new plugs and wires what all could it be

 

Could be lots of things, too lean, vacuum leak, need a CASE learn. Mine gives a P0300 at idle ever since the cam swap. P0300 is the shittiest code ever.

 

i think I have bad upstream o2's i guess i need to change them

 

Had problem with mine for awhile changed plugs wires fuel filter ended up being a weak coil pack

 

it used to throw cyl. 6 misfire but it dont anymore and I pulled the wires with insulated pliers and they all fire hard.


also how hard is the hd front end swap i love the hd front ends and have wanted to do the swap for a while

 

so o2 bank 1 sensor one is bad and my exhaust somehow melted my charcoal canister lines and fuel return line so it is getting re positioned and new lines coming asap.

 

The hd swap is pretty simple to do I did a write up on it. Its in show and shine im on my phone cant look it up

 

alright thats awesome I am about to change my fuel pump because a bad check valve and I have the o2's coming in the mail and it should be running like it used too.