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ej25 miss fire cylinder 1

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My question is after I do plugs and wires where is the cheapest place to get coils just in case and what do I gap the new plugs to?

Before you even start, use only NGK and or Subaru Plugs and wires.

- you can swap wires 1 to 3 and see if the fault follows.

- Plugs, if you are going to pull them you may as well change them.

- Could be a fuel problem as well, think fuel filter, injector.  The Injector can be swapped.

 

You didn't provide the year and head configuration.  Mileage would also be helpful.

 

Subaru coils hardly ever fail and I'd go used Subaru over aftermarket.

 

I have plenty of 96-99 DOHC coils.  $25 shipped.

The misfire may also be caused by oil in the spark plug tube.  In that case replace the spark plug tube gaskets (and valve cover gaskets since it has to come off to do it.

In that case you don't need any spark plugs/wires/coils.

 

Otherwise, about the coils. used, they don't fail often enough to warrant new prices.

 

use the OEM NGK plugs

Subaru or high quality wires (these engines aren't very forgiving of lower grade ignition stuffs.

 

In general it would be good to verify what engine you have - year/model EJ25.

  • Author

Sorry I forgot the year its a 97 legacy LSI and I'm prying its only electrical if it goes as far as fuel I'm already doing the filter this week along with techron and I only run 93 for gas and it only has 126k and 26 on the rebuild

  • Author

Alright I got my new wires from Subaru today and I ordered the double platinum plugs well I'm at it is there anything else I should look in to or just swap out the plugs and wires and see where it ends up

 

and I ordered the double platinum plugs

i do not think these are specified in the owners manual.??????????

they nay be fine,

but if your problem is not correcterd,

you will not know if it is the plugs or something else.

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