White smoke - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old Sep 15th, 10, 09:18 AM Thread Starter
 
Join Date: Jan 2006
Posts: 27
White smoke

68 Camaro Z-28 302 4 speed manual trans
Holley Performance 4150 750 4-barrel
The car starts and idles fine, 850 rpm idle w/ 28 degree advance
The smoke appears out of both pipes only after the car heats up, and while at idle--at a light or stop. The smoke appears to be of a white color w/ a small smell of oil. The car was taken to a "carb" guy who claims the carb is fine--he didn't check the jets nor do I know the jet sizes.
I replaced the plugs, rotor and cap. 6 out of 8 plugs were wet w/ fuel and carbon. After replacing the plugs, the car runs good. yet still gets the smoke out of the tail pipes. When you accelerate the "smoke" completely disappears.
indpthwill is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old Sep 15th, 10, 03:02 PM
Senior Tech
Kev
 
Join Date: Dec 2007
Location: North Texas
Posts: 640
Re: White smoke

Are you implying you want to know what the smoke is, or how to make it stop, or something else? Maybe you could ask a question?

These are the general indications from the exhaust color:

White = coolant
Blue = oil
Black = fuel (running rich)
67sc is online now  
post #3 of 6 (permalink) Old Sep 15th, 10, 03:04 PM
Senior Tech
Steps
 
Join Date: Dec 2005
Location: New Zealand
Posts: 13,321
Re: White smoke

How many miles on the engine?
Go down to the local workshop and get them to check the radiator for hydrocarbons..takes 5 mins and most do it for free.
Mark the spark plugs in the engine so when you plull them out u know which way the sat in the head....black on the top valve guides, black on the bottom rings, and if 1 is very clean compared to the others, suspect head gasket on the cylinder.

While running, pull the oil filler cap off, put your hand over, you should feel a little pressure /pulse, but if quite a bit rings
When the car sits over night or for a reasonable period during the day, then fire up, have someone check there is not a big puff of smoke come out then clear...valve guides.

Quote:
The car starts and idles fine, 850 rpm idle w/ 28 degree advance
With that sort of redulous advance on a street car , you Emissions...NOx etc are going to be real high, and firing before the piston gets to the top loading the engine at idle and cruising insosently down the highway.....slow death of an engine....if you have modern heads on , more efficent burn in chambers th death will be a little advanced...if compression is tweeaked up, then even faster still.
And it will not be long before the starter motor stops working when the engine is hot because it loads the armiture way too hot, and causes dry joints in it...

My Spelling is not incorrect...it is creative

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Steptoe is offline  
 
post #4 of 6 (permalink) Old Sep 15th, 10, 03:21 PM
Senior Tech
Al
 
Join Date: Nov 2002
Location: Vancouver, USA
Posts: 10,514
Re: White smoke

Quote:
Originally Posted by Steptoe View Post

With that sort of redulous advance on a street car , you Emissions...NOx etc are going to be real high, and firing before the piston gets to the top loading the engine at idle and cruising insosently down the highway.....slow death of an engine....if you have modern heads on , more efficent burn in chambers th death will be a little advanced...if compression is tweeaked up, then even faster still.
And it will not be long before the starter motor stops working when the engine is hot because it loads the armiture way too hot, and causes dry joints in it...
....man, that's DEPRESSING.....



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
BPOS is offline  
post #5 of 6 (permalink) Old Sep 16th, 10, 08:13 AM Thread Starter
 
Join Date: Jan 2006
Posts: 27
Re: White smoke

Wow: Steptoe: way to confusing, but thanks for the info--I think.
SC: thanks much simplier.
As for the timing any less the the 28 degree and the engine "putters" way to much--it doesn't like a lower degree.
I'm leaning towards coolant issues--head gasket.
indpthwill is offline  
post #6 of 6 (permalink) Old Sep 16th, 10, 04:06 PM
Senior Tech
Steps
 
Join Date: Dec 2005
Location: New Zealand
Posts: 13,321
Re: White smoke

Quote:
"putters" way to much--it doesn't like a lower degree.
If an engine has hi duration 'track' cam , huge carb, they are not designed to be efficient at low rpm (unlike EFi injection, computer maintained)....notice in the pits how engines have hi rpms? and often they have locked curves cause 99% of the time the are hard out...and they dont let idle for long.
If its not because of over cam/carbed for the appilcation..it is things like power valves , sec butterfly settings.

So a rough idle with a track engine on the street is the 'penaly' for doing so, or over advancing and slow death of components..its an individual choice really.

My Spelling is not incorrect...it is creative

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Steptoe is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

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:
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.
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:
OR

Log-in










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