Tango51
Active Member
- Joined
- March 11, 2008
- Messages
- 58
- Reaction score
- 2
- City, State
- Turtletown, TN
- Year, Model & Trim Level
- 1994 Eddie Bauer
Hey Guys, need a little help here.
I'm in the Army and just recieved a new assignment. I have to clear my living quarters by Friday but the poor X doesn't want to go. Here's where I'm at right now:
1. 1994 Eddie Bauer 2wd 4.0L OHV 153K started running really rough like it was misfiring. I limped her home and noticed black soot in the driveway beneath the tailpipe.
2. Removed #4 spark plug as it's the easiest to get to and discovered it to be carbon fouled.
3. Removed #5 spark plug (again for ease of access) it also was carbon fouled.
4. Decided to change plugs ans wires.
Old Plugs: Autolite APP7 65
New Plugs: Motorcraft SP 486
Old Wires: Accel Red 8mm
New Wires: Duralast P/N 4144
5. Before changing plugs and wires, I tested for spark, compression and fuel pressure. Results:
Spark verified at all cylinders using Craftsman Inline Spark Plug Tester.
Compression Test: #1 - 170
#2 - 165
#3 - 160
#4 - 160
#5 - 180
#6 - 180
Test conducted with all plugs removed, coil and fuel disabled. Wet test not conducted.
Fuel pressure held steady at 38psi.
6. Replaced plugs and wires and started the engine. It hesitated a lot at at first and then felt like it was trying to even out. Then it just got progressively worse and worse. Again I have black carbon soot on the driveway under the tail pipe and carbon fouled spark plugs.
Could this be an injector problem? If one of them fouls, could it cause the computer to increase the "on-time" of the others creating a super rich condition?
Now she won't even start. I really need a mechanic buddy right now. I have to get this vehicle out of here and I know I can get this worked out, I just need a little help. Anybody willing?
Respectfully,
John H. Panowich
SFC, USA
I'm in the Army and just recieved a new assignment. I have to clear my living quarters by Friday but the poor X doesn't want to go. Here's where I'm at right now:
1. 1994 Eddie Bauer 2wd 4.0L OHV 153K started running really rough like it was misfiring. I limped her home and noticed black soot in the driveway beneath the tailpipe.
2. Removed #4 spark plug as it's the easiest to get to and discovered it to be carbon fouled.
3. Removed #5 spark plug (again for ease of access) it also was carbon fouled.
4. Decided to change plugs ans wires.
Old Plugs: Autolite APP7 65
New Plugs: Motorcraft SP 486
Old Wires: Accel Red 8mm
New Wires: Duralast P/N 4144
5. Before changing plugs and wires, I tested for spark, compression and fuel pressure. Results:
Spark verified at all cylinders using Craftsman Inline Spark Plug Tester.
Compression Test: #1 - 170
#2 - 165
#3 - 160
#4 - 160
#5 - 180
#6 - 180
Test conducted with all plugs removed, coil and fuel disabled. Wet test not conducted.
Fuel pressure held steady at 38psi.
6. Replaced plugs and wires and started the engine. It hesitated a lot at at first and then felt like it was trying to even out. Then it just got progressively worse and worse. Again I have black carbon soot on the driveway under the tail pipe and carbon fouled spark plugs.
Could this be an injector problem? If one of them fouls, could it cause the computer to increase the "on-time" of the others creating a super rich condition?
Now she won't even start. I really need a mechanic buddy right now. I have to get this vehicle out of here and I know I can get this worked out, I just need a little help. Anybody willing?
Respectfully,
John H. Panowich
SFC, USA