Question about Ford Ranger
If the misfire happens to be on the same coil pack, if so equipped, then go for that coil pack.
If the vehicle has the on spark plug coils then replace for 1 and 4 cylinders.
Seems like you changed a lot of parts on this vehicle o2 sensor, plugs, wires, fuel and air filters.
3.0L Engine To Remove:
Do not pull on the spark plug wire because it can separate from the connector inside the spark plug boot.
NOTE: Wipe the coil towers with a clean cloth dampened with soap and water. Remove any soap film and dry with compressed air. Examine for cracks, carbon tracking and dirt.
Secondary Spark Test:
Secondary Spark Test This spark tester looks just like a spark plug. Attach the clip to ground and crank the engine to check for spark.
This spark tester has an adjustable air-gap for measuring spark strength and testing different voltage ignition systems.
Attach the clip to ground then crank the engine to check for spark.
This spark tester is the easiest to use. Just place it on a plug wire and the spark voltage is detected; the bulb on the top will flash with each pulse.
NOTE: The best way to perform this procedure is to use a spark tester (available at most automotive parts stores). Three types of spark testers are commonly available:
Posted on Jul 09, 2010
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Posted on Jan 02, 2017
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