General For General 240sx/Silvia (s-chassis) discussions.

SMOKE PROBLEM! Any info will help!

Thread Tools
 
Search this Thread
 
Old 08-02-2005 | 11:13 PM
  #1  
automagic's Avatar
Thread Starter
Registered User
 
Joined: Jul 2005
Posts: 22
From: Dallas, Texas
SMOKE PROBLEM! Any info will help!

I have this problem with my car. My mechanic is being a ***** about this ****. This gets me really frustrated.

My Problem: When ever I put my car in drive. After it's been running for the day. After my car gets out of FIRST gear white smoke comes out. Or if my car is in park or in neutral sitting infront of my house or friends, I rev it up to 3500RPMs and white smoke comes out. It seems as is oil builds up and gets shot out.

READ FIRST:
I've had several things replaced on my car which are:
+ Spark plugs
+ Had compression check
+ Put new PVC valve on engine.

My compression check was good. But me first hole for the spark plug was the lowest out of all. My numbers were 120 and the rest were around 130 through 140.

They also told me it wasn't my head gasket. And that is might have something to do with the valves in my engine.

IF ANYONE WANTS, I CAN RECORD A VIDEO FILE OF MY CAR DOING THIS.

Any info will help!
Old 08-02-2005 | 11:17 PM
  #2  
PNG's Avatar
PNG
Registered User
 
Joined: Aug 2005
Posts: 189
Oil smoke is usually bluish, not white. How does the smoke smell and "feel"? If it's sweet-smelling and doesn't have a greasy feel when you put your hand in the cloud (don't burn yourself!), it's coolant, not oil.
Old 08-02-2005 | 11:23 PM
  #3  
automagic's Avatar
Thread Starter
Registered User
 
Joined: Jul 2005
Posts: 22
From: Dallas, Texas
Originally posted by PNG
Oil smoke is usually bluish, not white. How does the smoke smell and "feel"? If it's sweet-smelling and doesn't have a greasy feel when you put your hand in the cloud (don't burn yourself!), it's coolant, not oil.
Sometimes it's a mixture of blue and white. That's the thing. Most the time it's white. Then sometimes its blue with white. I can video record it for you tomorrow.
Old 08-02-2005 | 11:37 PM
  #4  
jbask's Avatar
Registered User
 
Joined: Oct 2004
Posts: 224
From: Kelowna
Your compression doesn't sound the best. Do a leak down test, then you know if its still good to do.
Old 08-02-2005 | 11:43 PM
  #5  
automagic's Avatar
Thread Starter
Registered User
 
Joined: Jul 2005
Posts: 22
From: Dallas, Texas
Originally posted by jbask
Your compression doesn't sound the best. Do a leak down test, then you know if its still good to do.
Will do. Thanks.
Old 08-04-2005 | 11:56 AM
  #6  
Atown 240's Avatar
Contributing Member
 
Joined: Apr 2005
Posts: 513
From: Illinois
i'm having the same problem. WHen u let it idle for like 1-2 min and u gas it it smokes. Thought it was a leaky v/c but i replaced the gasket and it still does it so i donw konw.
Old 08-04-2005 | 05:15 PM
  #7  
M374llic4's Avatar
Registered User
 
Joined: Jan 2005
Posts: 78
From: BoostGetsYouLaid
Its got to be the head gasket. The head gasket keeps the coolant and oil out of the cylindar. If it were just blue, it would be the piston rings or the valve stem seals. But it its while, the only place for coolant to leak in is from the head gasket. And coolant burns white. So I am about 99% sure thats what it is.
Old 08-04-2005 | 07:11 PM
  #8  
needa240's Avatar
Registered User
 
Joined: Nov 2004
Posts: 276
well. hate to be the bearer(sp?) of bad news.........




but. your compression is terrible if you still have the stock ka. It should be around 170 to 180. That would also explain some of the blue smoke.... Your rings are prob. worn down, letting a little oil by.

Do as stated above though, before making jurasic desicions....do a leakdown test......I have a feeling it won't be great though.
Old 08-05-2005 | 03:27 PM
  #9  
automagic's Avatar
Thread Starter
Registered User
 
Joined: Jul 2005
Posts: 22
From: Dallas, Texas
Originally posted by needa240
well. hate to be the bearer(sp?) of bad news.........




but. your compression is terrible if you still have the stock ka. It should be around 170 to 180. That would also explain some of the blue smoke.... Your rings are prob. worn down, letting a little oil by.

Do as stated above though, before making jurasic desicions....do a leakdown test......I have a feeling it won't be great though.
I got the leak down and they said it was my Valve Stem Cells. Would that be my problem?
Old 08-06-2005 | 01:05 PM
  #10  
needa240's Avatar
Registered User
 
Joined: Nov 2004
Posts: 276
i believe the valve stem SEALS may be the cause of oil( IF THEY ARE BAD), but i'm not sure if it would affect the leakdown test.

also- i'm not sure if that will make your compression as crappy as it is.

i'd call a few mechanics and tell them how bad your compression is, tell the your car is smoking a little bit, and ask if it is possible for valve stem SEALS to cause that.
Old 08-07-2005 | 02:35 AM
  #11  
FlyingS13's Avatar
Registered User
 
Joined: Apr 2005
Posts: 44
From: New York
From the result of your compression test, it sounded more like a worn out piston rings. Do you lose any oil?
Old 08-08-2005 | 07:24 AM
  #12  
automagic's Avatar
Thread Starter
Registered User
 
Joined: Jul 2005
Posts: 22
From: Dallas, Texas
Originally posted by FlyingS13
From the result of your compression test, it sounded more like a worn out piston rings. Do you lose any oil?
Yes, I do lose oil. It's just first gear, mind you that though. =[
Old 08-09-2005 | 05:06 PM
  #13  
needa240's Avatar
Registered User
 
Joined: Nov 2004
Posts: 276
its not JUST first gear.

You only notice it in first because the stress on the car is the greatest then.

I too think bad rings.
Old 08-10-2005 | 01:42 AM
  #14  
lrb_2000's Avatar
Contributing Member
 
Joined: Oct 2004
Posts: 609
From: Idaho
bad valve stem seals can cause your car to smoke.. but worn pistons would be a cause of smoke and the bad compression... I would just fine a different KA and drop in... with 5speed.. it will probably be cheaper than replacing the rings, unless you do it yourself...maybe your headgasket is blown?

my last 240 was horrible.. it blew the headgasket 3 different times, the valve stem seals were shot, along with the rings... so basically it never stopped smoking, no matter what I fixed.

Last edited by lrb_2000; 08-10-2005 at 01:45 AM.
Old 08-11-2005 | 08:49 AM
  #15  
automagic's Avatar
Thread Starter
Registered User
 
Joined: Jul 2005
Posts: 22
From: Dallas, Texas
Originally posted by lrb_2000
bad valve stem seals can cause your car to smoke.. but worn pistons would be a cause of smoke and the bad compression... I would just fine a different KA and drop in... with 5speed.. it will probably be cheaper than replacing the rings, unless you do it yourself...maybe your headgasket is blown?

my last 240 was horrible.. it blew the headgasket 3 different times, the valve stem seals were shot, along with the rings... so basically it never stopped smoking, no matter what I fixed.
Haha, wow. That is a F'ed 240. But, that's what people have been tellin' me so, I've decided to either get an SR20 or just another KA and turbo it later down the road.

And I'm not going to pay for the domino effect on my engine...
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
240_baller
KA-T
5
10-12-2008 10:49 PM
240sx89
General
11
07-18-2006 08:30 PM
FudomYo
NA Motor
7
08-05-2005 03:49 PM
rudeboy
NA Motor
11
09-26-2002 08:31 PM




All times are GMT -7. The time now is 02:05 PM.