jscraiderfan
New Member
- Joined
- Apr 2, 2018
- Messages
- 22
- Reaction score
- 0
- Points
- 1
- Age
- 46
- Location
- Sacramento, CA
- Vehicle Year
- 2003
- Make / Model
- Ford
- Engine Size
- 3.0L V6
- Transmission
- Automatic
Hi all, new member here. Last week I bought an 03 Ranger with the 3.0 Vulcan V6, has about 140,000 miles. I got it cheap cause I knew it had issues, the Truck runs and drives but it has low compression on Cylinder #6. I'm trying to isolate whats causing it and want to rule out a bottom end problem (Don't really feel like yanking the motor out). It has a CEL code P0306 Cylinder 6 Misfire which I can only assume is due to the low compression in that cylinder. You can feel the misfire at idle but the truck has no issues accelerating up to highway speed and the engine doesn't stumble or backfire. The light will flash if the truck is at idle and warmed up but will steady on upon raising the RPM's above 1500 or just driving down the road at normal speed. I've searched around and i've heard the Vulcans in these years had valve issues so i'm wondering if that could be my problem here.. The truck does not smoke or burn oil and its not mixing the oil and coolant, also if I take the oil cap off while the engine is running I don't see any smoke or feel any pressure from the cap..
Compression Results from the last test I did.
Cylinder #1 - 200
Cylinder #2 - 170
Cylinder #3 - 170
Cylinder #4 - 170
Cylinder #5 - 160
Cylinder #6 - 91
Also I attached pics of the spark plugs. Any help would be appreciated.
Compression Results from the last test I did.
Cylinder #1 - 200
Cylinder #2 - 170
Cylinder #3 - 170
Cylinder #4 - 170
Cylinder #5 - 160
Cylinder #6 - 91
Also I attached pics of the spark plugs. Any help would be appreciated.
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