Nitrous Oxide Installation | Tuning | Products
Sponsored by:
Sponsored by:

Car Is Smokin After Nos Run

Thread Tools
 
Search this Thread
 
Old Sep 21, 2008 | 09:23 PM
  #1  
SPEEDYTRANSAM1996's Avatar
Thread Starter
TECH Fanatic
iTrader: (37)
 
Joined: Mar 2007
Posts: 1,122
Likes: 0
From: CHICAGO
Default Car Is Smokin After Nos Run

the car is smokin from the exhaust alot with no codes coming on. smells rich and smells like oil. my brother is going to do a compression test and some other stuff . im just wanting to no what else we should check for ?
i guess it can be a regulator or something he says or maybe a ring since the problem happened after i used some juice.

------------LT1-------------


dumping fuel out exhaust not normal even smoky when i get on it it will dump fuel, smell like fuel and have a light tannish color
now its even a bluish/white color????? suspect
no oil is the bumper or on the ground just fuel.

fuel psi is at 40 when at oper. temp
with vac line disconnected it stays at 40psi even ?
psi regulator isnt leaking fuel out the vac line
nor do i smell gas at that line
no leaks found anywhere from the rail/injectors
pulled out cyl # 1 and 3 no fuel on plugs at all and checked compression on those cylinders
175 at cyl 1
180 at cyl 3 with 6 cranks
havent got to testing other cylinders

UPDATE TODAY I SCANNED THE CAR.

iac motor is at 62 while cruising but at 128 koeo
fuel trim 1 % -4.7 122 idle
fuel trim 2 % 4.7 133 idle
ect 196* idle
maf (gr/s) 12.52 and volts at 2.58 while idling 4.8v koeo
tps is at .647 koeo

both front o2 sensors while cruising at 35 are between 180-900mv
both front o2 sensors are reading 800-900mv at idle completely warmed up
at idle while at stop o2's go between 62-500mv

fuel psi at 43 while cruising which is good

no codes

Last edited by SPEEDYTRANSAM1996; Sep 24, 2008 at 02:07 PM.
Reply
Old Sep 21, 2008 | 09:33 PM
  #2  
MYSTIC-1SC's Avatar
TECH Junkie
iTrader: (14)
 
Joined: Sep 2007
Posts: 3,277
Likes: 14
Default

yea, doesn't sound like a good thing.
Reply
Old Sep 21, 2008 | 09:44 PM
  #3  
SPEEDYTRANSAM1996's Avatar
Thread Starter
TECH Fanatic
iTrader: (37)
 
Joined: Mar 2007
Posts: 1,122
Likes: 0
From: CHICAGO
Default

i was going to run some1 with the juice to seal it and make some quick cash and hope after i let off the juice the motor wouldn't blow. then i decided not to since i dont want to f*ck **** up and make it worse over a couple bucks. im hoping a bad injector or something little.
Reply
Old Sep 21, 2008 | 10:11 PM
  #4  
SuperSlow02's Avatar
11 Second Club
iTrader: (16)
 
Joined: Feb 2006
Posts: 1,865
Likes: 0
From: Cape Girardeau, MO
Default

how much are you spaying? What color smoke?
Reply
Old Sep 22, 2008 | 01:24 AM
  #5  
stereotypicalv8guy's Avatar
Staging Lane
iTrader: (1)
 
Joined: Jun 2008
Posts: 84
Likes: 1
From: Las Vegas, NV
Default

Sounds like you have some blowby issues...more than likely fried the rings if it's a sudden thing like you say.
Reply
Old Sep 22, 2008 | 08:19 PM
  #6  
SPEEDYTRANSAM1996's Avatar
Thread Starter
TECH Fanatic
iTrader: (37)
 
Joined: Mar 2007
Posts: 1,122
Likes: 0
From: CHICAGO
Default

well the car doesnt feel weaker ;\ but the smoke normal looking white u can say...i sprayed it tons of time and had the car tuned for juice.
Reply
Old Sep 22, 2008 | 08:21 PM
  #7  
SuperSlow02's Avatar
11 Second Club
iTrader: (16)
 
Joined: Feb 2006
Posts: 1,865
Likes: 0
From: Cape Girardeau, MO
Default

lifted a head maybe and buring coolant..just throwin it out there
Reply
Old Sep 22, 2008 | 10:39 PM
  #8  
stereotypicalv8guy's Avatar
Staging Lane
iTrader: (1)
 
Joined: Jun 2008
Posts: 84
Likes: 1
From: Las Vegas, NV
Default

Yea, if it's white smoke I agree...sounds like you hurt a headgasket.
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 Sep 23, 2008 | 09:33 AM
  #9  
ShiznityZ28's Avatar
TECH Addict
iTrader: (11)
 
Joined: May 2002
Posts: 2,554
Likes: 1
From: GB MD
Default

If the smoke is gray ish its oil. if its black its fuel if its sweat smelling and bright white water/coolant.
Reply
Old Sep 23, 2008 | 12:57 PM
  #10  
koolrayz's Avatar
8 Second Club
iTrader: (26)
 
Joined: Nov 2002
Posts: 2,644
Likes: 3
From: mansfield ohio
Default

pull the spark plugs.
Reply
Old Sep 23, 2008 | 01:30 PM
  #11  
SPEEDYTRANSAM1996's Avatar
Thread Starter
TECH Fanatic
iTrader: (37)
 
Joined: Mar 2007
Posts: 1,122
Likes: 0
From: CHICAGO
Default

dumping fuel out exhaust not normal even smoky when i get on it it will dump fuel, smell like fuel and have a light tannish color smell when i get on it hard like 1/2 thottle, no oil is the bumper or on the ground just fuel.

fuel psi is at 40 when at oper. temp
with vac line disconnected it stays at 40psi even ?
psi regulator isnt leaking fuel out the vac line
nor do i smell gas at that line
no leaks found anywhere from the rail/injectors
pulled out cyl # 1 and 3 no fuel on plugs at all and checked compression on those 2 cyl.
175 at cyl 1
180 at cyl 2 with 6 cranks

there are no codes at all.


what can this be.
Reply
Old Sep 23, 2008 | 01:54 PM
  #12  
Jon5212's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Jan 2006
Posts: 1,299
Likes: 0
From: Indianapolis Indiana
Default

That fuel pressure is low, you should be around 58 PSI.
Reply
Old Sep 23, 2008 | 01:56 PM
  #13  
SPEEDYTRANSAM1996's Avatar
Thread Starter
TECH Fanatic
iTrader: (37)
 
Joined: Mar 2007
Posts: 1,122
Likes: 0
From: CHICAGO
Default

so would that make it smoke then for being low????????
Reply
Old Sep 23, 2008 | 02:47 PM
  #14  
koolrayz's Avatar
8 Second Club
iTrader: (26)
 
Joined: Nov 2002
Posts: 2,644
Likes: 3
From: mansfield ohio
Default

It would throw your fuel trims off and make it run like ****. Fix what you know FIRST. Low fuel pressure= replace pump, filter. Your sure the regulator is good?
Reply
Old Sep 23, 2008 | 02:55 PM
  #15  
Jon5212's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Jan 2006
Posts: 1,299
Likes: 0
From: Indianapolis Indiana
Default

What I'm thinking is worst case scenario... you went low on fuel pressure which means you could have went lean and toasted the rings in the motor, or hurt the head gasket as others have said and you are burning coolant now.
Reply
Old Sep 23, 2008 | 03:07 PM
  #16  
koolrayz's Avatar
8 Second Club
iTrader: (26)
 
Joined: Nov 2002
Posts: 2,644
Likes: 3
From: mansfield ohio
Default

has the coolant level changed in the overflow?
Are you low on coolant in the radiator or overflow?
Reply
Old Sep 23, 2008 | 03:17 PM
  #17  
JDP's Avatar
JDP
TECH Fanatic
iTrader: (21)
 
Joined: Feb 2006
Posts: 1,370
Likes: 1
From: Allen Park, MI
Default

when i chipped my number 7 i was burning coolant/oil.

pull out your back plugs and see what they look like, my number 7 was smashed closed.

but since you say its running fine you probably didnt smash your plug.
Reply
Old Sep 23, 2008 | 07:24 PM
  #18  
SPEEDYTRANSAM1996's Avatar
Thread Starter
TECH Fanatic
iTrader: (37)
 
Joined: Mar 2007
Posts: 1,122
Likes: 0
From: CHICAGO
Default

the car runs perfectly fine no bogs or nething. now the coolant level is perfect 100%. ill keep every1 updated ..... im doing the research for my brother since he works during the day. ill let him no what to check and take it from there. thanks alot for all the help and keep throwing stuff out there cause i want to check "EVERYTHING"
Reply
Old Sep 23, 2008 | 08:44 PM
  #19  
myfast70's Avatar
10 Second Club
iTrader: (38)
 
Joined: Oct 2006
Posts: 1,259
Likes: 0
From: Phoenix, Az
Default

Just for the hell of it, pull the dipstick and see what the oil looks like. See if there are any signs of water in the oil.
Reply
Old Sep 23, 2008 | 09:40 PM
  #20  
SPEEDYTRANSAM1996's Avatar
Thread Starter
TECH Fanatic
iTrader: (37)
 
Joined: Mar 2007
Posts: 1,122
Likes: 0
From: CHICAGO
Default

sorry i forgot to mention that ...... it looks fine and doesnt even smell like gas. ill have my bro look at it again for water/coolant.
thanks alot
anyone else lol
Reply



All times are GMT -5. The time now is 04:17 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