OK so I have been troubleshooting a rough idle issue. I check the EGR (Good), AAC Valve Assembly (Seems to work fine), Injectors are clicking and all vacuum hoses are in good shape. I do not know how to set the AAC Valve correctly though. Spark plugs are NGK PFR6B11 (Seemed OK but could be dry carbon on them - will check again after running the car). The weird thing is that the timing will periodically jump from 15 to 30-35 degrees when the car is all warmed up. Anyone know why this is this happening?
Follow Ups
Ok Got timing Set at 15 degrees but getting rough idle - blkrocket00:22:50 01/14/11