surreyboy

Hey all

i was getting the CEL on & it was misfire in cylender 2. I changed all plugs as i never had since owning the vehicle. Ran great , better than before , then after warm & on a decent drive , it started sputtering & missing , stalled a couple times & i pulled the code P0300 - multiple missfires. I changed all coil packs & again , it was running really good , after about 20 min of driving , it will start sputtering & missing again & stall out. P0300 code again. cleared the code & it was running good again but it started acting up again & the CEL cam one & started running rough. I got it home , just looking for some direction or suggestions here on what it may be....its leaving me feel like it may leave me stranded somewhere....
I have changed out the camshaft & crank shaft sensors not many kms ago , so those should be good im assumimg ?