modelageek
Active Member
- Joined
- Jan 31, 2009
- Messages
- 2,241
- Reaction score
- 14
- Points
- 38
- Location
- Boston, MA
- Vehicle Year
- 2004
- Make / Model
- Ford
- Engine Type
- 4.0 V6
- Engine Size
- 4.0
- Transmission
- Automatic
- 2WD / 4WD
- 4WD
I am looking at a 2002 with a rough idle and a compression of 80 in the #6 cylinder, it randomly throws a P0306. it might go a month without throwing it. any ideas of what the most common issue might be. I do not know if when they did the compression test if they did the oil drops to tell if it was the rings. the owner thinks it is a valve. they seafoamed it and it seemed to help it some. any feedback would be appreciated.