my 240 smokes - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

240sx1234 · 10-15-2010, 11:42 PM

alright so I have no idea where this smoke is coming from,its a white colored smoke that is coming out the exhaust.It will only come out though when I have been driving and then let it sit for a minute,and then rev the motor or start to go.It blows white smoke out and seems to be more the longer it sits,Ive checked the oil and the level hasnt moved but and is on the curve which im pretty sure is too much,but any help would be appreciated.

s13silvia123 · 10-15-2010, 11:48 PM

blown headgasket

93nismo · 10-15-2010, 11:49 PM

rings maybe?

epics13 · 10-16-2010, 12:07 AM

when u check the oil is it milky as in it looks as if coolant is mixed in if it is then it might be the head gasket, also what motor is this if the motor is turbo the seals might be bad.

g-via · 10-16-2010, 12:15 AM

are your coolant levels going down?

locoluna825 · 10-16-2010, 12:25 AM

my 240 smokes honda's

240sx1234 · 10-16-2010, 08:32 PM

its a ka24de

KoukiDrifter240 · 10-16-2010, 08:43 PM

check valve cover breather and see if smoke comes from there and also if its not going down and no coolent then it could be valve stem seals

seRu13 · 10-16-2010, 08:45 PM

its most likley the valve seals, nissan used crappy rubber for then and it wears out and causes the car to smoke. Pain in the ass to replace but relatively cheap.

KoukiDrifter240 · 10-16-2010, 08:50 PM

Quote:

Originally Posted by seRu13

its most likley the valve seals, nissan used crappy rubber for then and it wears out and causes the car to smoke. Pain in the ass to replace but relatively cheap.

+1

zombie faces cool
how many miles on car?

240sx1234 · 10-17-2010, 05:38 PM

134k miles

Mangudai · 10-17-2010, 05:50 PM

I thought bad valve seals would only cause black smoke?

240sx1234 · 10-17-2010, 11:19 PM

so yes or no on the valve seals?

Rabboni · 10-17-2010, 11:49 PM

White smoke is caused by coolant, and only coolant. If the smoke was slightly blueish then that would be oil. Sounds to me like you have a bad headgasket, or, less likely, a cracked head. Watch your coolant levels, and check for milky oil as stated above.

Mangudai · 10-18-2010, 05:51 PM

Ah that's right oil is blue, fuel is black.

Walperstyle · 10-19-2010, 11:20 AM

NOOBIES LISTEN UP

White smoke = coolant
Blue smoke = oil
Black smoke = fuel, and maybe oil and coolant

ALSO, the smell tells you what it is.

sweet = coolant
oil usually smells..well like burnt oil
fuel usually smells like burnt fuel

holy crap noobism in this thread. If you don't know the basics, don't comment.

240sx1234 · 10-19-2010, 02:28 PM

alright,so if im going to be taking my head off to change the headgasket before i turbocharge,what else should i change that is easy to get to with the head off?

2forsexty · 10-19-2010, 02:37 PM

Quote:

Originally Posted by Walperstyle

NOOBIES LISTEN UP

White smoke = coolant
Blue smoke = oil
Black smoke = fuel, and maybe oil and coolant

ALSO, the smell tells you what it is.

sweet = coolant
oil usually smells..well like burnt oil
fuel usually smells like burnt fuel

holy crap noobism in this thread. If you don't know the basics, don't comment.

amen brother

Walperstyle · 10-19-2010, 02:50 PM

Quote:

Originally Posted by 240sx1234

alright,so if im going to be taking my head off to change the headgasket before i turbocharge,what else should i change that is easy to get to with the head off?

Make sure when you take it off to keep track of where your dizzy and timing is at. Mark it if you can. Otherwise when you put it back on, you'll be here asking why your car is running like crap, or not at all.

If you are taking the head off, you may want to consider a mild port and polish and different cams. But thats if you plan on building up this engine or not.

If you go bigger cams, you'll probably have to adjust timing anyway.

but no, there is nothing else you really need to do. But make sure you don't get any debris inside the engine, when you clean the surface of both the head and block.

Cheers. Have fun doing the most annoying job on cars.

240sx1234 · 10-19-2010, 05:38 PM

i shouldnt change valve seals,which I have read about on this thread?Im not planning on building it yet,just getting it mildly ready for ka-t,that is if the compression is good to go

Walperstyle · 10-20-2010, 02:34 PM

how mild? if you are looking for anything over 250hp, you will want an o2 gauge and a good tune.

valve seals are not necessary if its not leaking oil into the piston chamber. But yeah, its only a few bucks to change them, so its up to you and if you have the ability to keep track of your buckets, shims and springs and such when you dismantle the head.

Walperstyle · 10-20-2010, 02:37 PM

if you are really interested in knowing the KA engine in and out, www.240SXTECHDVDS.org Home Page has some amazing videos that work well with a FSM

240sx1234 · 10-20-2010, 10:12 PM

im looking at getting around 250 for now,i plan on getting a dyno tune after i install everything turbo related. I will have it trailered somewherem,i have a aem wideband if thats what you mean by o2 gauge

Okinawandrifter87 · 10-20-2010, 10:16 PM

Did you replace your headgasket yet?

240sx1234 · 10-21-2010, 10:02 AM

no,I plan on changing the headgasket when I am doing everything else.I dont know which headgasket I should get though

redline racer510 · 10-21-2010, 01:18 PM

you have a blown motor lol

10-15-2010, 11:42 PM	#1
240sx1234 Zilvia Junkie Join Date: Feb 2009 Location: Birmingham,AL Posts: 335 Trader Rating: (2) Feedback Score: 2 reviews	my 240 smokes alright so I have no idea where this smoke is coming from,its a white colored smoke that is coming out the exhaust.It will only come out though when I have been driving and then let it sit for a minute,and then rev the motor or start to go.It blows white smoke out and seems to be more the longer it sits,Ive checked the oil and the level hasnt moved but and is on the curve which im pretty sure is too much,but any help would be appreciated.

10-15-2010, 11:48 PM	#2
s13silvia123 Post Whore! Join Date: May 2006 Location: where waldo is Age: 43 Posts: 3,267 Trader Rating: (16) Feedback Score: 16 reviews	blown headgasket __________________ 18g and 20g turbo users click on me http://zilvia.net/f/tech-talk/261219-18g-20g-turbo-users.html

10-15-2010, 11:49 PM	#3
93nismo Zilvia Addict Join Date: Dec 2008 Location: sycamore il Posts: 766 Trader Rating: (14) Feedback Score: 14 reviews	rings maybe? __________________ WTB: 1/24 scale chuki s13 model.

10-16-2010, 12:15 AM	#5
g-via Zilvia FREAK! Join Date: Jun 2007 Location: B.C., Canada Posts: 1,023 Trader Rating: (0) Feedback Score: 0 reviews	are your coolant levels going down? __________________ "I'm a rage-aholic, I just can't live with rage-ahol!!!"

10-16-2010, 12:25 AM	#6
locoluna825 Zilvia Addict Join Date: Sep 2009 Location: Santa Ana Age: 34 Posts: 721 Trader Rating: (27) Feedback Score: 27 reviews	my 240 smokes honda's Last edited by locoluna825; 10-19-2010 at 04:09 PM..

10-16-2010, 12:07 AM	#4
epics13 Zilvia Junkie Join Date: Feb 2009 Location: New York Posts: 491 Trader Rating: (8) Feedback Score: 8 reviews	when u check the oil is it milky as in it looks as if coolant is mixed in if it is then it might be the head gasket, also what motor is this if the motor is turbo the seals might be bad.

10-16-2010, 08:32 PM	#7
240sx1234 Zilvia Junkie Join Date: Feb 2009 Location: Birmingham,AL Posts: 335 Trader Rating: (2) Feedback Score: 2 reviews	its a ka24de

10-16-2010, 08:43 PM	#8
KoukiDrifter240 Zilvia Member Join Date: Jun 2009 Location: California Posts: 249 Trader Rating: (5) Feedback Score: 5 reviews	check valve cover breather and see if smoke comes from there and also if its not going down and no coolent then it could be valve stem seals __________________ farewell kouki!

10-16-2010, 08:45 PM	#9
seRu13 Leaky Injector Join Date: Apr 2009 Location: Phoenix Age: 36 Posts: 52 Trader Rating: (4) Feedback Score: 4 reviews	its most likley the valve seals, nissan used crappy rubber for then and it wears out and causes the car to smoke. Pain in the ass to replace but relatively cheap.

10-17-2010, 05:38 PM	#11
240sx1234 Zilvia Junkie Join Date: Feb 2009 Location: Birmingham,AL Posts: 335 Trader Rating: (2) Feedback Score: 2 reviews	134k miles

10-17-2010, 05:50 PM	#12
Mangudai Zilvia Addict Join Date: Jan 2007 Location: South Posts: 656 Trader Rating: (0) Feedback Score: 0 reviews	I thought bad valve seals would only cause black smoke? __________________ Almost there.

10-17-2010, 11:19 PM	#13
240sx1234 Zilvia Junkie Join Date: Feb 2009 Location: Birmingham,AL Posts: 335 Trader Rating: (2) Feedback Score: 2 reviews	so yes or no on the valve seals?

10-17-2010, 11:49 PM	#14
Rabboni Zilvia Member Join Date: Aug 2009 Location: Fairfield, CA Posts: 230 Trader Rating: (0) Feedback Score: 0 reviews	White smoke is caused by coolant, and only coolant. If the smoke was slightly blueish then that would be oil. Sounds to me like you have a bad headgasket, or, less likely, a cracked head. Watch your coolant levels, and check for milky oil as stated above. __________________ Baling Wire-The Duct Tape Of Champions

10-18-2010, 05:51 PM	#15
Mangudai Zilvia Addict Join Date: Jan 2007 Location: South Posts: 656 Trader Rating: (0) Feedback Score: 0 reviews	Ah that's right oil is blue, fuel is black. __________________ Almost there.

10-19-2010, 11:20 AM	#16
Walperstyle Nissanaholic! Join Date: Nov 2004 Location: Alberta, Red Derp Age: 44 Posts: 1,729 Trader Rating: (0) Feedback Score: 0 reviews	NOOBIES LISTEN UP White smoke = coolant Blue smoke = oil Black smoke = fuel, and maybe oil and coolant ALSO, the smell tells you what it is. sweet = coolant oil usually smells..well like burnt oil fuel usually smells like burnt fuel holy crap noobism in this thread. If you don't know the basics, don't comment. __________________ KA-T ORG-Function over Flush

10-19-2010, 02:28 PM	#17
240sx1234 Zilvia Junkie Join Date: Feb 2009 Location: Birmingham,AL Posts: 335 Trader Rating: (2) Feedback Score: 2 reviews	alright,so if im going to be taking my head off to change the headgasket before i turbocharge,what else should i change that is easy to get to with the head off?

10-19-2010, 05:38 PM	#20
240sx1234 Zilvia Junkie Join Date: Feb 2009 Location: Birmingham,AL Posts: 335 Trader Rating: (2) Feedback Score: 2 reviews	i shouldnt change valve seals,which I have read about on this thread?Im not planning on building it yet,just getting it mildly ready for ka-t,that is if the compression is good to go

10-20-2010, 02:34 PM	#21
Walperstyle Nissanaholic! Join Date: Nov 2004 Location: Alberta, Red Derp Age: 44 Posts: 1,729 Trader Rating: (0) Feedback Score: 0 reviews	how mild? if you are looking for anything over 250hp, you will want an o2 gauge and a good tune. valve seals are not necessary if its not leaking oil into the piston chamber. But yeah, its only a few bucks to change them, so its up to you and if you have the ability to keep track of your buckets, shims and springs and such when you dismantle the head. __________________ KA-T ORG-Function over Flush

10-20-2010, 02:37 PM	#22
Walperstyle Nissanaholic! Join Date: Nov 2004 Location: Alberta, Red Derp Age: 44 Posts: 1,729 Trader Rating: (0) Feedback Score: 0 reviews	if you are really interested in knowing the KA engine in and out, www.240SXTECHDVDS.org Home Page has some amazing videos that work well with a FSM __________________ KA-T ORG-Function over Flush

10-20-2010, 10:12 PM	#23
240sx1234 Zilvia Junkie Join Date: Feb 2009 Location: Birmingham,AL Posts: 335 Trader Rating: (2) Feedback Score: 2 reviews	im looking at getting around 250 for now,i plan on getting a dyno tune after i install everything turbo related. I will have it trailered somewherem,i have a aem wideband if thats what you mean by o2 gauge

10-20-2010, 10:16 PM	#24
Okinawandrifter87 Post Whore! Join Date: Jun 2006 Location: Sacramento, CA Posts: 3,959 Trader Rating: (22) Feedback Score: 22 reviews	Did you replace your headgasket yet? __________________ Driftphreak87

10-21-2010, 10:02 AM	#25
240sx1234 Zilvia Junkie Join Date: Feb 2009 Location: Birmingham,AL Posts: 335 Trader Rating: (2) Feedback Score: 2 reviews	no,I plan on changing the headgasket when I am doing everything else.I dont know which headgasket I should get though

10-21-2010, 01:18 PM	#26
redline racer510 Zilvia FREAK! Join Date: Dec 2007 Location: EARFF(earth for you idiots) Posts: 1,072 Trader Rating: (1) Feedback Score: 1 reviews	you have a blown motor lol