Has new spark plugs in it. Also have moved plugs around from cylinder that does not misfire to the #4. #4 still has misfire. Has new #4 injector. Fuel press key on - engine off is 40 psi. Vacuum at idle is 18" and steady.
Plug wire is 12kohm from coil pack to plug. Don't see any bad spots or arching on it.
Primary coil circuits are
batt to 3/6 is.5ohm
batt to 1/4 is.5ohm
batt to 2/5 is.5ohm
Secondary coil circuits are
This started suddenly after an oil change. Don't know that the oil change is associated with the problem, but may be relevant. The engine isn't making any unusual noises from the valve train or lower end
have the same problem?
Sunday, January 17th, 2010 AT 1:33 PM