I first had P0300 and P301. So I changed all the plugs since I bought it used (just hit 100k mi). After I was done and started her up no CEL. So I was happy with that. I went and filled up the tank about a half mile down, cel went back on. This time only P0301. Any suggestions for my next move? I definitely feel less power on the xpressway.
Just an update. I finally checked the #1 injector. It had a crack around the green plastic trim. I'm hoping that will solve my misfire problem but I really don't feel any improvement yet. Still seems a little sluggish on acceleration.
The first thing I did when I got the CEL was replaced all the plugs, swapped the #1 coil (after the CEL came back). So this injector thing was my recent thing on the check off list.
I haven't tried seafoam, I don't know too much about it. I heard a lot about it and it seems like you can use it for everything, how would I apply it to my situation?
run a can through your brake booster to clean out any carbon build up. run a 1/3rd of a can in the gas tank... run it for a week and then use the remainder of the the an you put in the tank through the brake booster again and call it a day.
cleared my misfire up and shes been running fine since