Subaru Misfire Repair | How To Fix With One Tool Only!

Subaru Misfire Repair | How To Fix With One Tool Only!

This is a 2010 Subaru Impreza with 150k miles. It recently developed a misfire for cylinder one. This is how I diagnosed the problem in less than 10 minutes. Certainly something many of you can do at home. Cheers.

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This being a four cylinder box engine, there are four possible misfire codes:
Subaru P0301 – Cylinder One Misfire
Subaru P0302 – Cylinder Two Misfire
Subaru P0303 – Cylinder Three Misfire
Subaru P0304 – Cylinder Four Misfire

Chances are the misfire is due to a bad or worn ignition coil, spark plug wires and/or spark plugs. If all look okay with spark, then check the fuel injector. If everything checks out, then a compression test or, even better, cylinder leak down test would isolate the problem.

Note:
Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Carsntoys is a member of the Amazon Influencer Program.

Publication, reproduction or distribution of this film is strictly prohibited.

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Comments

Ye Htut Naung says:

Thanks for sharing

theoriginalmungaman says:

Can’t the injector read correctly but still be bad?

D G says:

Thanks for an exceptionally well-done and useful video.

D Fields says:

Great video there , I recall some you did before on a Nissan Maxima. Do u still have that car ? If not what killed it
Transmission, accident , engine etc

Mohabat khan Malak says:

We really appreciate you bringing us these Subaru diagnosing and repair clips. Thank you.

Vdubster19 says:

You throw it in the trash because it's a subaru.

Saef Hindi says:

Thanks for this helpful video. Appreciate it.
I got 2010 Forester N/A engine. Had new spark plugs and wires, clean mass air flow sensor, new air filter. but still have what i call it ""detontation" when press gentle on gas peddle only. It goes away i put gas 94 octane. Otherwise will happen if put 91 octane or less. Any suggestions pls ?

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