Number 5 cylinder issue 300ZX Z32 - Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z
User Tag List

 
LinkBack Thread Tools
post #1 of 2 (permalink) Old 07-21-2019, 03:26 PM Thread Starter
Junior Member
 
WillWag#78's Avatar
 
Join Date: Jul 2019
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Number 5 cylinder issue 300ZX Z32

I've replaced all spark plugs, swapped the Coil Packs around and unplugged each Coil Pack one by one and got a drop on 1, 2, 3, 4 and 6. When I unplugged #5 no drop or anything. I have a slight miss that comes and goes. Being intermittent should I go ahead and let a local mechanic pull off the plenum and clean all injectors and put a different but better clip to go on and off of the injector at the wiring harness? All cylinders ohmed at 13.75 to 14.00 and the limits are 10.00 to 15.00 is what I read. Is the Plenum modification where you can Dremel off a few mm's so you don't have to pull it off all the time? I'm just going to shell out $400 to get the wiring done right (shrink wrap) and clean all of the injectors and put new o-rings on them and the crossbar. The car has 95K miles, one owner in very mint condition. This is the only problem and I've got it down to #5 cylinder and I'm stumped. Corrosion on #5 wiring to the top of the injector? I can't get the injector wire off of the male end of the top of the injector. Any idea's please.....
1990 300ZX Z32 Coupe 2+2 Manual
5 Speed with a Hatchback.
Thank You,
Chad Wagner
Attached Images
File Type: jpg 20190523_124049_1563736289104.jpg (282.8 KB, 5 views)
File Type: jpg 20190530_153345_1563737040242.jpg (170.7 KB, 5 views)
WillWag#78 is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 07-22-2019, 02:37 AM
Senior Member
 
Join Date: Sep 2006
Posts: 5,096
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 153 Post(s)
There are more authoritative figures on the site, but at first glance you would think if all ohmed out OK that you do not have corrosion. But having removed these connectors and found green slime between the connector pins which can be dampish, it's possible when the voltage is applied there may be some leakage across the pins effecting the firing.
.02c

zippityzda
dumbestone is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome
 


Content Relevant URLs by vBSEO 3.6.1