Smoking problem?

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b653gunn

New Member

Oct 3, 2005

40

0

0

Mar 3, 2006

#1

• Mar 3, 2006

• #1

Hello everyone i was wondering if anybody could tell me the reason why my 4.6 is smoking ,First let me tell you what I've done, It's a 1996 GT ,Mac CAI,2003 port and polished plenum and throttle body(half-shafted),and the PCV inline filter(homemade but air tight),underdrive pullyies,3:55 gears,and a BBK catless X-pipe w/ homemade mil eliminators,When i bought the car it had 165000 miles(all highway) but hey for 3 grand and the condition it was in it was a steal,No check engine light comes on ,not yet anyway,when I'm driving the car it doesn't seem to smoke but let's say i stop at a red light and go take off a cloud of smoke rolls out ,not like a batman smoke screen but a nice little cloud ,i was wondering if it might be a bad valve seal or could it be a bad set of rings ,it smokes out of both sides not just one,or could it be a bad injector ,anyone with an idea of what it might be would be helpful,the car purs like a kitten and idle's great.

 

mustangman9812

10 Year Member

Jan 14, 2004

661

6

49

Mars Hill, NC

Mar 3, 2006

#2

• Mar 3, 2006

• #2

Blue or Black Smoke??

 

B

b653gunn

New Member

Oct 3, 2005

40

0

0

Mar 3, 2006

#3

• Mar 3, 2006

• #3

smoke

It's hard to tell really,it think it might be white,I'm really pulling to bad valve seals,It has a hint of oil odor.

 

Mike97gt

it doe snot

Founding Member

Jan 26, 1999

10,633

7

89

the people's republic of massachusetts

Mar 3, 2006

#4

• Mar 3, 2006

• #4

white smoke is coolant. have you been loosing coolant at all? and if not are you sure it's smoke

 

shallowreef

New Member

Nov 3, 2005

0

1

0

illinois

Mar 3, 2006

#5

• Mar 3, 2006

• #5

if its not smoke what else could it be?

 

B

b653gunn

New Member

Oct 3, 2005

40

0

0

Mar 3, 2006

#6

• Mar 3, 2006

• #6

smoke

No ,not loosing any coolant ,just replaced the intake manifold before i purchased it.

 

Nater

New Member

Sep 5, 2003

239

0

0

Maplewood, MN

Mar 3, 2006

#7

• Mar 3, 2006

• #7

Is the smoke coming from the pipes or from the engine but "pouring"--for a lack of a better term--under the car? If from the tips, run your finger in there, if it is more than just a dusting on the pipes, there would be a leak someplace internal that is causing it to burn up.

 

85 Coupe 5.0

Founding Member

Dec 18, 2001

817

2

16

Kansas

Mar 3, 2006

#8

• Mar 3, 2006

• #8

i'll chime in on this one, i had the SAME EXACT problem until recently.........


You notice smoke you say? only on takeoff?

I had the same problem, the car would puff a cloud of white/bluish smoke. The longer it sat and idled, the bigger and more intense the puff. Quite annoying. I really only noticed it after I removed my cat's. Mine didn't smoke when you started it cold, only would start smoking after it warmed up a little bit. Never smoked when I was on it at all.

My first solution was to install a PCV oil seperator, which helped, but didn't cure it. I finally found the problem when i did the PI headswap, the exhaust valve stems were caked with black burnt oil deposits, and you could see fresh oil running down the valve stem.

haven't had a problem with the PI heads smoking at all, and man, am I happy.

You could probably install new stem seals, but this would be a temporary fix as I bet the guides are wore with the mileage.

The best solution, install a new of heads or have your current ones re-worked.

just my story........

 

TrueBlue03

Member

Dec 9, 2003

372

3

18

Bay Area, CA

Mar 3, 2006

#9

• Mar 3, 2006

• #9

...
mine has a smoking problem also...

 

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B

b653gunn

New Member

Oct 3, 2005

40

0

0

Mar 3, 2006

#10

• Mar 3, 2006

• #10

smoke

Thank you ,I had that feeling that was the problem,now i just have to find PI heads.Once again thank you.:SNSign: :SNSign:

 

shallowreef

New Member

Nov 3, 2005

0

1

0

illinois

Mar 3, 2006

#11

• Mar 3, 2006

• #11

TrueBlue03 I love the color of your car. I wish my car was that color! Nice Car

 

8

86bluecobra

Advanced Member

Dec 20, 2004

4,265

12

69

B.C. Canada

Mar 3, 2006

#12

• Mar 3, 2006

• #12

my car has a smoking problem aswell. check my sig page 4 of cardomain site.

 

back_in_black

New Member

Apr 12, 2003

460

1

0

frederick, MD

Mar 3, 2006

#13

• Mar 3, 2006

• #13

my car had a smoking problem but I put the patch on it's rear quarter panel and have not allowed it to smoke anymore,

 

Mike97gt

it doe snot

Founding Member

Jan 26, 1999

10,633

7

89

the people's republic of massachusetts

Mar 3, 2006

#14

• Mar 3, 2006

• #14

shallowreef said:

if its not smoke what else could it be?

Click to expand...

steam from condensation

 

85 Coupe 5.0

Founding Member

Dec 18, 2001

817

2

16

Kansas

Mar 4, 2006

#15

• Mar 4, 2006

• #15

Seems like a lot of the NPI motors really had this problem, I think every high-mileage one i've seen local has it. And when mine started doing it I did a search here on stangnet and over on TCCOA's forums, and a lot of the 4.6 T-Bird guys were complaining about it also.

it's definately in the guides/seals, so long as it only does it after idleing a while, not while you are on it.

It's definately not condensation, that's white smoke, and doesn't smell like burnt oil. Mine was whiteish/blue and smelled like oil, and my low oil light would come on about every 3 weeks, and i'd have to add 1/2QT.

I'll try to snap a pic of my NPI heads for ya, you can clearly see where it was sucking oil past the guides and seals.

time for a PI upgrade, it's THE MOST gratifying swap i've EVER done to a stang, and possibly the cheapest. If you watch E-bay closely, you can find a good, cheap set. I shat you not, my PI swap, inlcuding fluids and misc. cost me <$600.00. That includes the intake, heater tube, ect. Granted, I got the New PI Intake for $20.00, with the aluminum crossover. God, i love having friends that work at a parts store

Ditch the NPI's, get some PI's and you'll never regret it.