glued2it
Active Member
- Joined
- December 12, 2006
- Messages
- 99
- Reaction score
- 0
- City, State
- Tulsa OK
- Year, Model & Trim Level
- 96 xlt
I seem to have a firing problem with cylinders 4 & 5.
When I remove the plug wires from cylinders 4 & 5 I have no power loss.
to test the wires I switched over wire from cyl 6 and no change.
It all started with a rough idle after an engine swap.
96 4.0
What I have done so far;
All of these have improved idle and acceleration.
Still getting spark knock and rough idle.
I'm assuming because 4 & 5 are not firing correctly.
The plugs spark when pulled.
No CEL light either.
could the coil not be giving enough spark? I always thought that spark was spark.
When I remove the plug wires from cylinders 4 & 5 I have no power loss.
to test the wires I switched over wire from cyl 6 and no change.
It all started with a rough idle after an engine swap.
96 4.0
What I have done so far;
- Cleaned MAF & IAC
- replaced upper and lower intake gaskets
- Replaced fuel injectors (From original engine)
- replace spark plugs
- check for further vacuum leaks
- changed fuel and air filter
- Seafoam in gas and intake
- tested power to injectors 14.6V
All of these have improved idle and acceleration.
Still getting spark knock and rough idle.
I'm assuming because 4 & 5 are not firing correctly.
The plugs spark when pulled.
No CEL light either.
could the coil not be giving enough spark? I always thought that spark was spark.