How To Fix Cylinder Misfire - P0300, P0301, P0302, P0303, P0304, P0305, P0306. 

What would cause it to do this, bad spark plug or just bad coil pack? I’m trying to figure out if it’s should replace the spark plug also or just the coil pack. Thanks for the video

@edwardvalencia291 if you're replacing the coil packs you may as well change the plugs at this time

For sure! 😂

Thank you, I always put a lot of effort into my videos. I appreciate that you noticed it!

I second this comment. I really appreciate the car ride because it shows what you experience when this happens. My car is doing this. Also the information about the last number indicating which coil was even more helpful. Thanks a bunch!

Thanks!

Thanks! :) Good point. I figured, no one has time to waste.

Thank you! I try to keep them that way!

Agreed

Peter Meiwaku

thanks

Agreed

That's awesome! Thank you for sharing!

Way to go! 👏

Thank you, I’m glad you appreciated my efforts!

Thanks! Hopefully thats it.

Michael, I bought an entire set of ignition coils for my 6 cylinder Nissan Maxima for a mere $80 at Amazon. They were shipped in 2 days. This price wasn't for the boots only, but new ignition coils. I wonder how long they'll last. One year will be enough as the replacement labor was not a big deal.

Michael Krichevsky 2005 Colorado po3o3

🇻🇪

No shit, Amazon prime is were they get they're parts, then drill the innocent people that walk into their shops

Michael Krichevsky I moonlighted for pepboys, dont ever let trainies work on your car.

Awesome, thank you!

Thank you!

Thanks!

Glad it was helpful!

Julieanne Echols thank

Definitely give it a shot! It's easy and fun.

Thanks!

Thanks, I know exactly what you mean, that's why I try hard to make my videos that way. Thanks for taking time to leasve feedback, it means a lot for me!

+Edgar Alejandro Thank you!

Great! 👍🏼

Always happy to hear that!

Did it fix your problem? Mine is having the same issue!

Awesome! Love hearing that! Happy thanksgiving!

+Czech Mate Awesome, thanks for sharing!

shrugs, that's a distributor system with a cap/rotor/ wire set... i got a 2002 quest with the same engine. so check the cap/rotor as well or change them all as preventative maintenance. my cap was cracked a while back and did a p0300

Thank you for sharing this!

+Randy W Thanks man, I'm always trying to keep it short and to the point. I know no one has 30 min a day to waste on that...

+Michael Booth That's great! Thank you!

Thanks!

+lalo Miranda Great! I also will be doing valve cover on my Altima this month. Good luck!

MakeUPbyKiani .

MakeUPbyKiani

how to chaange ignition coil 2012 wranglers sport

+Keith James Thank you! I greatly appreciate your thouths! That's exactly where I came from myself, and why I started sharing my experiences! I'm glad you found it helpful!

True! I just drove it around the block to record the symptoms of the issue.

Edward Thayer

or if you have a VW it means your car is working great :P

Edward Thayer why is that?

MARVIN MEJIA because you are doing catastrophic damage to your engine or it's components!

🤓 Thanks!

Tbf. He did say "In my case". But yeah, really sucks trying to diagnose a p0300🙄

just help sharing then.

Mine has a leaky valve cover gasket. The seals around the spark plug wells are leaking and the oil built up and caused the spark to short. It can be several things for sure.

Yeah, this one is pretty easy to work on.

Yes, works well til this day.

Thanks!

Well.... Things haven't gone exactly as smooth to date. I replaced the one coil indicated on the diagnostic code (P0304) + spark plug and the car drove great without problem for about 15-20 mile test drive. Then as I pulled into a restaurant at near idle speed, the rough idle began again, then got completely worse until the check engine light came back on and sputtered all the way home. Scratched my head then figured the misfire was O2 Sensor related b/c I had also gotten that code (P0300) simultaneous to the (P0304). Replaced the Oxy Sensor and the misfiring has gotten worse still.... I'll first move to rule out the Cylinders 2 & 6 before things get really challenging. Since the Maxima is 6 Cylinders, the rear bank requires a lot more parts to remove before you can even access cylinders 1,3,&5. So, I'm guessing I'll have to complete the process with the other 5 to hopefully fix the problem. If not there, then maybe something more in wires or otherwise... But at least you got me somewhat comfortable with what to expect in the process.

+Vroom !!! Yea, working on big engines isn't much fun at all. Let me know if it works after you are finished.

+Vroom !!! P0300 is not necessarily O2 sensor related. It indicates multiple or random misfires.

Upon reviewing my work thus far (02 sensor, Cylinder 4 Ignition Coil + spark plug replacements), it turns out simply the O2 sensor wire connector wasn't snapped completely closed. Once I got the clamp closed and the connection snug, all the misfire issues were eliminated and engine performance returned to optimal - no misfires and the dashboard gauge turned off. The car accelerated with full normal power and ran extremely strong. SO - my original issues are gone. Since you and others indicate the other sensors are likely soon to fail, I'll look to replace Cylinders 2 & 6, then 1,3,& 5 soon thereafter. THANKS again for the help!!!

faith jones ... how did you fix yours. ? I'm going to try Sea Foam & oil change . But Auto Zone , said the code was my 3rd cylinder misfire .

mines did the samething but I changed out my fuel injections and it stopped but change out the fuel injection wiring harness. your problems should be fixed.

I have a 2009 Nissan Murano and the code is 0300 which means random misfire how do I find out which one it is ??!! Help and thank you

P0300 means random misfire, but P0316 means random misfire in first 1000 revolutions first few minutes. If you don't have P0316, just P0300, it means you are failing on multiple cylinders when the car is in closed loop control, so more likely a sensor (crankshaft position sensor, oxygen sensor, maybe MAF sensor).

I change out the wiring harness and all the plugs but the car is still shaking when I come to a stop and when I drive sometime it act as if I can't get gas or something

That's awesome!

Watch 0:40-0:52 I hope that explains your question.

He troubleshooted the problem exactly the way it should have been done: He tested the faulty part in each cylinder and got the same error code each time the part was moved to a different cylinder. Since the part was the only variable, it was the part that was faulty. Great video and done professionally and scientifically!

Thanks!

Why u so sensitive lol?

I agree. Everyone, please let's respect each other!

Mp McKee Thanks, I put a lot of time and effort into them! I'm glad it's appreciated.

Awesome!

Thanks!

Thanks!

Did you need to replace spark plugs also?

@@edwardvalencia291 I don't think I "needed" to. The boot had the same notch as in the video. But since the package from amazon came with 4 plugs and boots, I just changed them all. My plugs didn't look great. But with the correct socket for spark plugs, it's about as easy of a repair that I've done.

👍🏼

+Amjad Alabidi That's great! Thank you for sharing!

Awesome!

Jorge Monsalve Glad to hear it worked for you! 😁👍🏻

+kblinn68 I'm glad to hear that, thank you for sharing!

Glad to help

+Edmauro dos Santos Good luck!

+Jay Tyler Thank you! I always try to keep them that way.

My pleasure!

+lalo Miranda No problem! Thanks!

Thanks!

Glad it was helpful!

SIMPLE ERIC was your problem fixed?

chiemena obinnwa YES. after driving about 2 miles switch on/off the car the light went away.

Thanks again!

Thanks!