How to fix Misfiring Engine/Replace Coilpack in Subaru (P0301, P0302, P0303, P0304)

How to fix Misfiring Engine/Replace Coilpack in Subaru (P0301, P0302, P0303, P0304)

#Subaru

Been fighting this issue for some time, but finally fixed it. Strangest thing — the engine seems to misfire only when it’s wet and humid outside. Once it is warm, the problems go away. Here I replace the coilpack in my 2006 Subaru Forester (EJ25) in hopes of fixing the issue.

As a side note, after installing that Duralast coilpack, the engine takes longer to start/crank over on start-up, so I suspect it’s of lower quality than Subaru’s coilpack, so I recommend you just go for OEM since it is not that much more expensive.

OEM Subaru Coilpack:
https://amzn.to/3n7RmOM

Disclaimer: I’m an Amazon affiliate.

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Comments

miguel ruiz-velazquez says:

Did you replace the wires that is wet and powerless issue

Ashley Miller says:

Nice video, I noticed your PVC valve needs to be replaced when you pulled off the hose.

Thomas Deschenes says:

Hey I don’t know if you actually gonna read this but I now own your old 1983 k10 and I was wondering if you knew anything about it from a previous owner

Serban C. Musca says:

Congrats on ye house offer being accepted! Speaking of real estate related $hit, are you gonna do a real estate series as Louis Rossmann did and expose all the bad apples you've met? That woud be fun from my perspective, I'd definitely watch you narrate that.
As to the car, I guess next step is a pressure difference test between before and after the cat'. I concur it may be a restricted exhaust problem (I hope for you it's not a crumbled cat' that's the cause of the restriction, 'cos those suckers tend not to be cheap).
Godspeed and congrats on surviving in a motel room that much time without killing / getting killed by your gf. I guess you'd be able to move to Japan 😉

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