I noticed about 500 miles ago that the coolant was low so I added some now it's low again. I didn't see any leaks, I then sarted to get codes p0308 (cyl 8 missfire) and p0358 (ignition coil H pri/sec circuit) also an unrelated code, I think, p0455 (evap systems leak gross) My thoughts on this were intake leak into # 8 cyl ? I checked # 8 plug and it looks fine. just checking to see what everyone else thought before I started this job

Thanks much

 

ok quick update replaced coil on number 8 and that fixed miss ordered evap can should fix p0455 now still have to find coolant leak

 

Welcome to the forum,
Do you have the rear AC ? if so check at the rear quarter panel behind the tire for any leakage.