Soot fouled plugs - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old Jun 26th, 02, 06:39 AM Thread Starter
Senior Tech
Join Date: May 2001
Location: Austin TX USA
Posts: 501
On a fresh 331 (.030 over 327) that has run great for about 600 miles, I decided to look at the spark plugs and they're fouled with soot as is the exhaust pipes. Even the insulator is black and powdery.

I'm guessing there's a prob with the power piston in the Q-jet...perhaps the spring is too stiff, though I'm running a mild cam (.447 and 222 @ 50%).

1) Is there anything else that could cause this rich condition.

2) Would a hotter plug help?

Thanks in advance for your input!

[This message has been edited by Sleepy-69 (edited 06-26-2002).]
Sleepy-69 is offline  
Sponsored Links
post #2 of 2 (permalink) Old Jun 26th, 02, 01:55 PM
Senior Tech
Join Date: Jan 2001
Location: Dade City,FL U.S.A.
Posts: 121
Put a new set of plugs in and run it for a few more hundred miles then check them again alot off times on a fresh engine it will take a little while to seat the new rings and this will make it hard to read what the engine is doing by looking at the plugs.
If the plugs still look bad when you check them again then start troubleshooting if the plugs come out black and sooty or wet with a gas smell then your running it rich and carb adjustments will have to be made. Hope you find the problem
RODKNOCKER is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

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


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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