[mikesz]

So I was getting CEL for the SAI. I replaced the check valve, vacuum reservoir, vacuum lines with silicon hoses and just about anything else in the SAI system I could reach. Put car back together. Started car up and no more SAI codes but now getting missfire on cylinder 1 ONLY cylinder 1. CEL codes p0300, p0301, p1319, p1313. I checked the fuel injector for cyl 1 o-ring is fine. Any suggestions?