Nissan 370Z Forum  

Chasing misfire

Hi, I’ve been having a p0305 code for about 6 months intermittently. I used to clear the code and it would stay away for a few weeks. I went ahead

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain


Like Tree1Likes
  • 1 Post By Spooler

Reply
 
LinkBack Thread Tools Display Modes
Old 11-17-2023, 11:32 PM   #1 (permalink)
Enthusiast Member
 
Wuero370z's Avatar
 
Join Date: Nov 2018
Location: Albuquerque
Posts: 358
Drives: 2013 Nissan 370z
Rep Power: 6717
Wuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond repute
Default Chasing misfire

Hi, I’ve been having a p0305 code for about 6 months intermittently. I used to clear the code and it would stay away for a few weeks.
I went ahead and changed all plugs and a coil pack (accidentally changed cylinder 3 not 5) and reset the ecu but code came back almost immediately. Car has a high idle but doesn’t run horribly.
When doing the spark plugs cylinder 1 plug was completely black and the coil had some soot or black dust covering it. The rest of the cylinders looked totally fine including number 5.
I’m going to buy another coil and change cylinder 5 and hope that fixes my problem but I’m wondering why cylinder 1 plug would be fried like that…. I have been getting a heavy smell of gas from time to time in the cabin and I don’t have any exhaust leaks.
The car is also twin turbo and full e85 which I daily drive and fill up on mediocre e85.

Do you think I have a clogged injector or something? Not sure why one plug would be bad but get w misfire for a different cylinder.


Sent from my iPhone using Tapatalk
Wuero370z is offline   Reply With Quote
Old 11-18-2023, 12:00 AM   #2 (permalink)
A True Z Fanatic
 
Join Date: Jun 2014
Location: Ga
Posts: 13,834
Drives: 2013 Nismo 370z
Rep Power: 2684392
Spooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond repute
Default

Yup, sounds like an injector issue. Pull them and have your injectors cleaned.
Tractionless likes this.
Spooler is offline   Reply With Quote
Old 11-19-2023, 12:04 PM   #3 (permalink)
A True Z Fanatic
 
Tractionless's Avatar
 
Join Date: Jan 2016
Location: Atlantic SE
Posts: 1,326
Drives: '10 K23 ST 7AT
Rep Power: 30525
Tractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond repute
Default

Quote:
Originally Posted by Wuero370z View Post
Hi, I’ve been having a p0305 code for about 6 months intermittently. I used to clear the code and it would stay away for a few weeks.
I went ahead and changed all plugs and a coil pack (accidentally changed cylinder 3 not 5) and reset the ecu but code came back almost immediately. Car has a high idle but doesn’t run horribly.
When doing the spark plugs cylinder 1 plug was completely black and the coil had some soot or black dust covering it. The rest of the cylinders looked totally fine including number 5.
I’m going to buy another coil and change cylinder 5 and hope that fixes my problem but I’m wondering why cylinder 1 plug would be fried like that…. I have been getting a heavy smell of gas from time to time in the cabin and I don’t have any exhaust leaks.
The car is also twin turbo and full e85 which I daily drive and fill up on mediocre e85.

Do you think I have a clogged injector or something? Not sure why one plug would be bad but get w misfire for a different cylinder.


Sent from my iPhone using Tapatalk
What plugs and coils did you install?
__________________
Toys Not Tots
Tractionless is offline   Reply With Quote
Old 11-19-2023, 12:09 PM   #4 (permalink)
A True Z Fanatic
 
Join Date: Jun 2014
Location: Ga
Posts: 13,834
Drives: 2013 Nismo 370z
Rep Power: 2684392
Spooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond repute
Default

Quote:
Originally Posted by Tractionless View Post
What plugs and coils did you install?
I installed Z1 coilpack and those things are junk. Only use OEM coilpacks and be careful where you buy them. Lots of counterfeit parts out there these days.
Spooler is offline   Reply With Quote
Old 11-20-2023, 10:51 AM   #5 (permalink)
Enthusiast Member
 
Wuero370z's Avatar
 
Join Date: Nov 2018
Location: Albuquerque
Posts: 358
Drives: 2013 Nissan 370z
Rep Power: 6717
Wuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond reputeWuero370z has a reputation beyond repute
Default

Did hks m45hl plugs and an oem coil pack. Didn’t replace them all yet but I will. Just stupid expensive.
I’ll stay away from Z1 as much as possible, not the greatest parts imo


Sent from my iPhone using Tapatalk
Wuero370z is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Supercharged 370Z Chasing a Porsche GT3 On Track370Z Chasing a Porsche GT3 On Track DJackie Nissan 370Z Photos / Spyshots / Video / Media Gallery 0 02-05-2018 09:19 AM
'15 Z06 chasing P1 at COTA Haboob Other Vehicles 21 02-23-2015 07:25 AM
Chasing a Lambo bobburk Nismo 370Z 4 10-08-2014 11:43 AM
Chasing Boss 302 at VIR takjak2 Track / Autocross / Drifting / Dragstrip 25 06-02-2013 07:24 PM
Chasing a 370Z @ ACS WillardRacing Track / Autocross / Drifting / Dragstrip 14 02-02-2010 06:57 PM


All times are GMT -5. The time now is 03:21 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2