LT1-LT4 Modifications 1993-97 Gen II Small Block V8

misshift + black smoke??

Thread Tools
 
Search this Thread
 
Old Jan 8, 2008 | 06:32 PM
  #1  
95hitam6's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Sep 2007
Posts: 140
Likes: 0
Default misshift + black smoke??

so i'm messing around, and i downshift to 3rd, redline, then go to 4th and BOOM! car shakes crazy, i look in the rearview mirror nothing but black smoke, i can't even see the car behind me. i push the clutch in go to nuetral and coast a lil, put it in 4th and drive slow. it acted as if i went from 3rd to 2nd gear but i coulda sworn i went to 4th, so now i'm scared thinking i blew something, but the car drives fine, idles fine no more smoke, no leaks. what happened? even if i did the 3rd to 2nd misshift what caused all the smoke? and what to look for?
Reply
Old Jan 8, 2008 | 08:05 PM
  #2  
Beaflag VonRathburg's Avatar
OWN3D BY MY PROF!
iTrader: (176)
 
Joined: Feb 2006
Posts: 9,146
Likes: 3
From: Jax Beach, Florida
Default

You probably bent some pushrods.
Reply
Old Jan 8, 2008 | 08:08 PM
  #3  
Rocky70304's Avatar
Launching!
iTrader: (4)
 
Joined: Nov 2007
Posts: 232
Likes: 0
From: Ft. Worth, TX
Default

^ agree with the pushrod theory.. except you normally will have some noise still, or have a driveability issue.. but nonetheless that bent pushrods is probably the case.
Reply
Old Jan 8, 2008 | 08:33 PM
  #4  
letsrun97z's Avatar
TECH Resident
iTrader: (7)
 
Joined: Feb 2007
Posts: 993
Likes: 0
From: Visalia, Ca
Default

lol i think it happens to most m6 guys once luckly it didnt hurt mine i was going i think 70 and bam wap wap redline and pulled me back then back to fith cruzed a lil bit then realized nothing was wrong )but no smoke(
Reply
Old Jan 8, 2008 | 09:31 PM
  #5  
95hitam6's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Sep 2007
Posts: 140
Likes: 0
Default

yeah i drove it again and it drives and sounds just like it did before, no ses, oil looks fine, is the only way to tell is to pull it apart?
Reply
Old Jan 8, 2008 | 09:42 PM
  #6  
CRAZZ28's Avatar
TECH Regular
iTrader: (13)
 
Joined: Sep 2007
Posts: 433
Likes: 1
From: Warsaw, IN
Default

is the only way to tell is to pull it apart?
Probably. But it isnt too hard. just pull the valve covers and take off the rockers then pull out the pushrods. If they are bent it will be visible.
Reply
Old Jan 8, 2008 | 09:45 PM
  #7  
SlowZ28/SS's Avatar
On The Tree
iTrader: (14)
 
Joined: Oct 2007
Posts: 188
Likes: 0
Default

i doubt there bent if its running the same and you cant hear anything....if they bent you should get a tap out of it
Reply
Old Jan 8, 2008 | 10:51 PM
  #8  
RickyMartinZ28's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: May 2007
Posts: 1,374
Likes: 0
From: Tyler, Tx
Default

My A4 freaked once on a WOT downshift and bounced and bam, crazy black smoke. No damage either... kinda strange, never done it since.

-Rick
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jan 8, 2008 | 11:36 PM
  #9  
roadhog_113's Avatar
TECH Regular
 
Joined: Feb 2006
Posts: 434
Likes: 0
From: Winnipeg, Mb
Default

possible a bunch of gas got dumped in when redlined and then it backfired and poof all the burt gas goes out the exhaust. Thats the theory anyway.
Reply
Old Jan 9, 2008 | 02:54 AM
  #10  
SOLO Z's Avatar
Staging Lane
iTrader: (1)
 
Joined: Aug 2006
Posts: 51
Likes: 0
From: Warrenton, Va
Default

not sure about a LT1 but most stock rev limiters cut fuel to limit the RPMs
Reply
Old Jan 9, 2008 | 11:26 AM
  #11  
95hitam6's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Sep 2007
Posts: 140
Likes: 0
Default

but heres the thing i'm almost 100% sure i didn't go to 2nd, i've done that once in my life and not in this car, it was like i went to 4th and didn't put it in gear all the way and the shifter grinded and shook and the black smoke. also i'm leaking gas at the connector to the fuel filter from the feed line, very small drips, could this have thrown my fuel pressure off, relating to the black smoke?
Reply




All times are GMT -5. The time now is 09:18 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