the cars runs but i have a mis-fire code P0300 - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums
 
LinkBack Thread Tools
post #1 of 3 (permalink) Old 04-30-2015, 09:39 PM Thread Starter
Regular Member
 
Join Date: Apr 2015
Posts: 154
 
the cars runs but i have a mis-fire code P0300

the car runs but i have a code P0300 AND i have an overheating issue. i think i might have a bad thermostat, im going to look into that issue tomorrow.

as far as the P0300 i think im going to change the plugs tomorrow. when i was having all those no spark problems the car got flooded pretty bad. i changed the oil and there was probably several quarts of gasoline in the oil from the engine cranking with no spark as the injectors were still firing. i did not run or drive the car with that oil, i changed it when i re-installed the water pump.

i have replaced the opti (delphi), coil, and ignition module (was replaced today when i had interment starting and stalling with all proper voltages present.

the car starts and runs but i still have some issues. i think the plugs have to go, if there was that much gas in the oil then the plugs are probably screwed as well.

i was wondering if i could use NGK V-power plugs. they are fairly cheap with a discount i can get a set of 8 for $14, i am starting to run into a budget. are these at least an acceptable plug. if i dont go with those i will buy a set of delco cooper core plugs. how difficult are plugs to replace in 4th gens? i have heard the wires suck, but i dont imagine the plugs are that bad. i think the biggest pain with the wires would be on the opti side

i still have to buy two tires. im going with a pair for cooper zeon ZTP tires, i had them on my third gen and they always held the road well.
ad4517 is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 05-01-2015, 06:24 AM
Global Moderator
 
cocobolo95's Avatar
 
Join Date: Sep 2008
Location: Fruitland Park,Florida
Posts: 12,774
 
Try misting the plug wires with water and running at night . You are looking for spark leakage.

A coil where the insulation has broken down can have spark jumping from secondary to primary, thus wasting part of the spark energy. This condition, however, would smoke a coil in short order.

Have you put your car on an obd 2 scanner with real time sensor data? You can get useful info from a running sensor scan. And sometimes be lucky enough to be pointed right to the offending component.
cocobolo95 is offline  
post #3 of 3 (permalink) Old 05-01-2015, 10:46 AM Thread Starter
Regular Member
 
Join Date: Apr 2015
Posts: 154
 
im going to try plugs as i said the car flooded really bad, lots of gas in the oil. i do not have an OBD II scanner but if plugs dont fix the issue then i will have my GM guy over and he will bring his tech2 GM scanner. i fixed the overheating issue, that was simple. im a dumbass and the coupler fell off the water pump when i re-installed the water pump on the car. if i have to do wires then i will but i heard that they are a really big pain so im going to start with plugs.
ad4517 is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums 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