09 legacy 2.5 non turbo/#2 cylinder misfire check engine light

[denny69]

09 legacy 2.5 non turbo/#2 cylinder misfire check engine light, I'm a new Subaru owner and I have no idea where to begin. Maybe spark plug or wire? please help

 

[remy6908]

Id start with the plugs then coil. Check the spark plug and if its good swap the coil from one to another and see if the misfire follows.

 

[denny69]

Id start with the plugs then coil. Check the spark plug and if its good swap the coil from one to another and see if the misfire follows.

thanks so much, i will get back and let you know how its going.

 

[denny69]

it wasn't the plug, guess I will try coil

 

[denny69]

thanks so much, i will get back and let you know how its going.

when you say coil, swap one for the other, do you mean switch number 2 wire to another spot on the coil? isn't there a firing order?

 

[TheMortallyWounded]

when you say coil, swap one for the other, do you mean switch number 2 wire to another spot on the coil? isn't there a firing order?

Not 100% familiar with it but looking at the coil pack for a 2009 it looks like you have two coils. Each coil goes to two cylinders. Usually in this arrangement each coil fires twice per rotation, simultaneously, making that a "waste spark" to try and ignite unburned fuel. But that's not important right now.

You should be able to swap the coils. If the misfire switches to a different cylinder, then it's that coil. If it's ANY coil, replace them BOTH. It's old enough where they will probably need it soon.

 

[denny69]

tested coil and wires both are good, gonna try fuel injector.

 

[richardmaberry]

So the wires are in a set order so you dont want to attach them backwards. I had a mouse chew into my cool wiring and I learned to look closely at all my wiring.