Diagnosing 2015 Nissan Juke 1.2L with several faulty codes: P0300 & P0304-66

Welcome to my channel. Today we have a 2015 Nissan Juke 1.2L with several faulty codes
1) P0300 - Random Misfire
2) P0304 - Cylinder 4 Misfire
3) P0011 -

Customer brought the vehicle towed to me as the vehicle was broken down on the motorway. Customer said the vehicle was shaking & there was a misfire?


We first started the car and no warning lights were showing up. But the vehicle was shaking and smoke was leaving from the exhaust and there was a misfire. Even with these things there was no warning lights to be seen which was a bit strange. So we connected the vehicle to my computer and ran a full scan. After i scanned, there was 2 undocumented faulty codes. Both didn't have any names on them, but i knew what names they were. P0300 which is random misfire & P0304 which is cylinder 4 misfire. So I opened the hood and started to check it old school way. While listening to the engine I recognized that the timing chain is noisy & needed to be replaced.

We started by removing cylinder number 1 and the engine started to get violent. The same was done for cylinder 2, 3 & 4. Each time i took the electric connector off from the coil pack. The engine would violently shake. That means that the spark plugs and ignition coil are doing the job.

I also started to remove the spark plugs one by one and I found that one spark plug was covered with oil. So i cleaned the spark plugs & swapped them & put the spark plugs back in. Later i ran a scan on my computer & cleared the codes. Even after I had cleaned the spark plugs, swapped them & cleared the codes, the vehicle was still shaking . So i rescanned the vehicle again and I wasn't able to any codes but after 15 attempts I was able to get one. But still that was an undocumented code P0011.

Later i connected the vehicle to another computer of mine. After i scanned the vehicle i found one code on engine management. Later we looked on ECM (engine control module). There we had one error code P0304-66 CYL 4 MISFIRE (P0304). Which means cylinder 4 has a misfire.

Next we did a cylinder compressor test.

Cylinder 1: 175psi (which is good)
Cylinder 2: 175psi (Same)
Cylinder 3: was little lower 170psi
Cylinder 4: 40psi (This was what was causing the problems)

As of now we have decided that the cause could be either pistons or the valve damaged. However, we need to open the engine to have a visual examination. So now we are waiting for the customer to give us a thumbs up whether we do the job or not.


That's all for now. Thanks for tuning in, and we'll catch you in the next video!


🔴🛒Now We are Open👕 Shop Now🏠
👉https://sanumotors.store
⭕ www.sanumotors.com
🛑FOR DONATION
Donate : https://shorturl.at/bqwLP
Follow Us:
🟥 YouTube - https://shorturl.at/pHKWX
🟥 Facebook -http://shorturl.at/CSZ27
🟥 Instagram - https://shorturl.at/eloNW
🟥 Tiktok - https://shorturl.at/mqsJKWelcome to our YouTube channel

Hello everyone, thank you for visiting our description. We really appreciate the support you giving for our channel. Please follow our socials to receive updates as soon as we post 🔔.

Donations play a big role in helping us to post regularly, so please feel free to donate using the link above 🔝.

Would you like to be part of Team SANU-MOTORS? Then please visit our sanumotors store to buy our merchandise and be part of the team 🤝.

Are you someone who loves to reach out to me regarding questions and advice regarding your vehicle? Well, I'm very grateful for your interest and support. However, it can be very challenging to balance my work and also take your calls as I receive more than 5-10 calls per day. But, as your calls play a big role, I have set aside the time to solemnly answering your calls 🥳. You can reach me on weekdays between 5pm and 6pm (UK time).

However if you URGENTLY need to reach me OUTSIDE of these times. Don't worry you can still do so. BUT, you will need to send me a donation before hand & send me a text message booking a time slot to suit your convenience. Please be reminded, the call will have to be in a MAX timeframe of 15 MINUTES.

Your donations will not only support my work but also ensure you get the attention you need.

Thank you for your continued support. I look forward to our interactions during the designated hours. Let's keep the conversations flowing 🔥🔥.


TEAM SANUMOTORS.