1jz problems(white smoke)

nguyen95465

nguyen95465

Supramania Contributor
Dec 24, 2006
48
0
0
38
Yeadon, PA
just bought this supra a couple weeks ago from johnnyredline. Car ran great till today. Just changed the rear brakes and when i started it up and let it idle for a while it started smoking like crazy. Alot of white thick smoke out the exhaust and turbo. car seems like it runs fine though. not overheating or sputtering. Could it be just the turbo seals? Bad headgasket? Brake fluid burning? I was planning on rebuilding the engine anyway but not for a couple months.

any thoughts?
oh yea the car is 1jz obviously with
TO4R (garrett turbo w/66.5mm compressor/.68ar turbonetics exh housing)
apexi power fc w/boost control kit
rs*r gt2 exhaust 3" from muffler to turbo
c's short shifter
tial 40mm wastegate w/external dump
chinaman manifold
aeromotive fpr
jawsgear 1 piece aluminum driveshaft
innovate lc-1 wideband/datalogger
walbro 255
jdm 440cc injectors
 
Wills7MGTE

Wills7MGTE

( . )( . )'s RULE!!!!
May 12, 2006
1,077
0
0
38
Jackson, MO
www.myspace.com
I'd almost say Headgasket as its white smoke meaning coolant, but coolant can come from a number of places to, does it overheat? make the waterfall noise on startup? do a compression and leak down test too.
 
OneJoeZee

OneJoeZee

Retired Post Whore
Mar 30, 2005
5,721
0
0
38
aboard the Argama
Bad smoke at idle?

Sounds like the turbo is dead to me.

Maybe you just noticed it now because it's the first time you let it idle for a little while.
 
OneJoeZee

OneJoeZee

Retired Post Whore
Mar 30, 2005
5,721
0
0
38
aboard the Argama
I don't think he blew his HG between doing his brakes.

But it is definately possible that when he let the car idle for longer than he had before, he now noticed that it is smoking.

I've had plenty sets of blown turbos and they all smoked pretty bad at idle. It's not too bad when you first notice it and unless you're sitting in traffic, you might never know until it's worse. And the smoke was white. Yes, i know blue = oil but it can look white too.

I'm sticking with the turbo is blown.
 
trdmk3supra

trdmk3supra

LVNBSTLFE
Mar 31, 2005
207
0
0
44
Summerville, South Carolina
that is possible also. if the smoke is white then you can also check by puuting hand at muffler tip and smell the exhaust on your hand. if it smells sweet then it is the head gasket. i am also a technician at a dealership and have seen many blown head gaskets.
 
Tim

Tim

regular member
Oct 16, 2006
272
0
0
CA
Just pressure test your cooling system and that is the best way to rule out the chance of a blown head gasket. It should hold pressure, what ever the cap is rated at 15-20psi and if the pressure drops then pull out your spark plugs and look into the cylinders and you will see that they are wet above the piston. That will tell you that you have a blown head gasket for sure. Chances are your turbo seals are gone since your car is not overheating.
 
Rich

Rich

tunin' tha beast
Jun 2, 2007
319
0
0
the netherlands
Turbo seals.
When oil gets on a hot surface the smoke will be white not blue anymore. Coolant from a bhg will give a mist of white smoke, not thick white smoke like he described.
 
nguyen95465

nguyen95465

Supramania Contributor
Dec 24, 2006
48
0
0
38
Yeadon, PA
i drove the car last night becuase i figured if it is just the turbo seals i was going to see if it spooled ok. after making a cloud throughout the town it stopped smoking after 10 minutes of driving. Now all i get is a little grey smoke sometimes if i let it idle for a while. Turbo spooled fine up to 17 psi. So far no more white smoke.

i will prob take it to a shop anyway sometime this week to get a compression test done just to get that out the way.

thanks for all your help anyway.
 
The Reaper

The Reaper

Single, and lovin' it!!
Jan 10, 2006
1,909
0
0
Florida
yea my twins are shot and it smokes like spy hunter at idle and its white as well

small amounts of burnt oil is blue, LARGE amounts is whiteish.

that sucks if it was blown when he sold it but who knows. good luck man
 
supra1008

supra1008

Active Member
May 2, 2007
1,179
0
36
Philadelphia
So when you're driving the car it drives fine? Check your ECU. Check all the capacitors in your ECU. My car is doing that too. Once you start driving it and keep it at hi rpm it's fine. when it sits and idles it will start to smoke. The capacitor is bad on mine and is doing the same thing. check your ecu.

nguyen95465 said:
i drove the car last night becuase i figured if it is just the turbo seals i was going to see if it spooled ok. after making a cloud throughout the town it stopped smoking after 10 minutes of driving. Now all i get is a little grey smoke sometimes if i let it idle for a while. Turbo spooled fine up to 17 psi. So far no more white smoke.

i will prob take it to a shop anyway sometime this week to get a compression test done just to get that out the way.

thanks for all your help anyway.
Click to expand...
 
AGlobalThreat

AGlobalThreat

Acceleration
Apr 4, 2005
991
0
0
Santa Clarita
My car smoked when the ECU went bad

I don't think that's his problem cuz there wasn't THAT much smoke and it was obviously fuel cuz the smell

I was just answering Rich's question, I guess I missed the part about "white" smoke o_O
 
JASONA70

JASONA70

nomnomnom
Oct 27, 2006
743
0
0
socal
sm_photo_missing.jpg


this is what bad caps on the ecu sounds and looks like. the car would sound like a dying whale. oh btw dont mind those hondaz in the background revving their engine. they were just jealous.

driftmotion did a great job reaplacing the caps.
 
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