cschuckls4

Have a 2008 Impala SS 161k, had multiple Misfire code before and cylinder 2 misfire as well... changed spark plugs, wires found out cylinder 2 wire was cut had figured that was the issue of cylinder 2 missing. changed Thos parts while later I decided to check my engine light out already had a check engine light due to my EVAP vent valve solenoid. and found out I still have Thos codes there. yes, I did clear them when I changed spark plugs and wires. currently I'm trying sea foam in the tank to see if it's my injectors other than that any other ways this can be caused? I don't really want to spend the money on all new coils.

dezldave961

Quickest check would be to swap the coil with another one, and see if the misfire code follows. You can also do this with a possible clogged injector as the next check, if the coil move doesn't show anything.

EVAP code is one I've been meaning to address on my GXP for a while. Replaced solenoid in rear driver's side fender, but still remains, so I'm going to be dropping the tank to put a fresh pressure sensor in there (readings were the culprit, from what I remember last time I scanned it). Stopped driving it daily when I bought my truck, but let a coworker use it last summer while fixing his Camaro. Fuel fills very slow due to not venting pressure if recently ran, so it's been due a while.