General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by:
Sponsored by: CARiD

Blue smoke at the end of dyno pull

Thread Tools
 
Search this Thread
 
Old Mar 12, 2006 | 01:09 PM
  #1  
GuitsBoy's Avatar
Thread Starter
TECH Senior Member
iTrader: (4)
 
Joined: Apr 2003
Posts: 6,249
Likes: 3
From: Long Island, NY
Default Blue smoke at the end of dyno pull

At the end of my third and final consecutive dyno pull yesterday (club dyno day) I noticed some blue smoke start around 5.5K or so. Here's a vid, but youll need the latest quicktime:

http://www.ihearyou.com/~tony/videos...tony_dyno3.mp4

What do you guys think? Could it just be the oil thinning out from three consecutive runs? Car runs fine and oil presure is great. The smoke was not present on the first two pulls, except for a little black smoke on decel. I just hope my rings arent done...

Thanks,
-Tony
Reply
Old Mar 12, 2006 | 02:16 PM
  #2  
Z28LS1camaroguy's Avatar
TECH Addict
iTrader: (3)
 
Joined: Apr 2005
Posts: 2,905
Likes: 0
From: Northern Kentucky
Default

you could have blown a head gasket, most likely blue or white smoke from the engine means head gasket problems.
Reply
Old Mar 12, 2006 | 03:11 PM
  #3  
GuitsBoy's Avatar
Thread Starter
TECH Senior Member
iTrader: (4)
 
Joined: Apr 2003
Posts: 6,249
Likes: 3
From: Long Island, NY
Default

Originally Posted by Z28LS1camaroguy
you could have blown a head gasket, most likely blue or white smoke from the engine means head gasket problems.
Just installed heads 2 weeks ago. I was meticulous with the install. Heads were milled and stoned perfectly flat as checked on a surface plate and a height gauge to within half a thousandth. Gaskets were GM MLS. Fluids are still topped off although its only had 30 miles since the dyno. The car does not smoke at idle or cruise, nor did it smoke on cold startup this morning. I dont think its a head gasket problem. Im fairly certain it was just high RPM ring flutter letting some oil through above 5 or 6K, i just wanted some other opinions based on the vid. The last pull went a little higher than the others, to 6800 or so.
Reply
Old Mar 12, 2006 | 04:50 PM
  #4  
Z28LS1camaroguy's Avatar
TECH Addict
iTrader: (3)
 
Joined: Apr 2005
Posts: 2,905
Likes: 0
From: Northern Kentucky
Default

well maybe since you did the head swap not to long ago there are some fluids in some tight places and its just burning it off at that high RPM. did u spill anything when you did the swap??
Reply
Old Mar 12, 2006 | 05:00 PM
  #5  
GuitsBoy's Avatar
Thread Starter
TECH Senior Member
iTrader: (4)
 
Joined: Apr 2003
Posts: 6,249
Likes: 3
From: Long Island, NY
Default

On the inside of the motor? Not likely. I did however blow off my exhust the night before the dyno, and i had shimmed the band clamps using aluminum tape so theyd bite a little harder. It could have been some of the glue from the tape burning, but im fairly certain it was oil. Ill check the plugs next weekend. Might also be carbon from the headers blowing out. I dont do a lot of WOT blasts, so three dyno pulls in a row could have broken up the carbon a bit. I guess time will tell. Id probably be heading a cracked ringland if that were the case, no?
Reply




All times are GMT -5. The time now is 03:27 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE