| Author |
Message |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 147
Reg: 11-2006
|
anyone have any idea why smoke would be coming out of my oil breather?! and when i open the oil cap smoke comes out there too. i did an oil change and filter change and no change. it was at the painters sitting for a while only being turned on and off every now and then and i went there and ran her for a bit on a few occasions. anything would be a great help. i need it to be running properly because she's booked in for a tune and more psi at the end of this month |
Anish Varsani
DieHard
QLD
V8 UZZ30
Posts: 556
Reg: 07-2005
|
Which oil breather? Do you have you PCV system hooked up as per factory or did you put a filtered atmospheric vent on the breather connection?
You'll get smoke from the engine while it's running if you don't have a vacuume line connected to extract the blowby gases and oil mist.
When you just shut it down and open the oil filler the smoke will be from blow by and oil mist as the engine is still hot. |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 148
Reg: 11-2006
|
I'm not sure whats done but maybe this picture can help you. i bought it as is so i'm not sure
|
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 149
Reg: 11-2006
|
Another closer up
|
Brett Moloney
DieHard
Queensland
Supercharged UZZ31
Posts: 572
Reg: 07-2005
|
valve seals maybe??? |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 150
Reg: 11-2006
|
was thinking that Brett but i didn't wanna go ripping her apart till someone could narrow it down for me first |
Brett Moloney
DieHard
Queensland
Supercharged UZZ31
Posts: 574
Reg: 07-2005
|
might be an excuse to get a nice set of modified heads.  |
Miles Baker
DieHard
Vic
66 Mustang GT Convertible, 55 Chevy Bel Air, 69 Firebird 455, 73 Corvette 4sp T-Tops
Posts: 922
Reg: 08-2005
|
valve stem seals? they will let smoke out the exhaust on startup after the car sits for a while.
pcv is on the other side. you'll want to verify the pcv system is hooked up correctly for a supercharged application. also make sure the pcv valve is good and the hose is not blocked. smoke out the oil cap suggests excessive blowby in the crank case. either a bung pcv system or buggered rings. need to know where that breather goes to. |
Gary Nimmo
TryHard
WA
V8 Supercharged & intercooled
Posts: 276
Reg: 07-2005
|
It shouldn't have a breather on there either it should be connected into the throttle body there should be a fitting there for it
If everything is connected where it should be the engine will run better
Well this is what I found anyway |
Anish Varsani
DieHard
QLD
V8 UZZ30
Posts: 557
Reg: 07-2005
|
Yeah, what Gary said.
The smoke that is coming out of the breather would normally be plumbed back into the intake to be burnt in the engine. |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 151
Reg: 11-2006
|
you sure? that breather comes out the back end of the valve cover i am pretty certain. if so where do i tap that back into? |
Anish Varsani
DieHard
QLD
V8 UZZ30
Posts: 558
Reg: 07-2005
|
Bottom of the throttle body. There should be an elbow to connect it to. I'm guessing yours will have it blocked off with something.
The connection is not easy to make unless you have very small hands or remove the throttle body. |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 152
Reg: 11-2006
|
Neil connected that breather there himself when my car was at his work shop. whats it actually do? |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 155
Reg: 11-2006
|
also my car was idling like crap and i thought it was plugs and it wasn't, then leads and it wasn't either so then i cleaned the rotors and distributor caps and she idles good again but when i get to about 2000 rpm she sputters again and i'm thinking this has something to do with why that breather is smoking cause it never use to |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 156
Reg: 11-2006
|
also guys i pulled my throttle body off and found two lines that look like vacuum lines but had nothing attached. can someone clear this up? that breather runs there cause the supercharger line runs into the throttle body.
|
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 2475
Reg: 03-2006
|
That could be the Coolant Lines or EGR lines. Used to run hot coolant to increase the temp of the throttle body to increase cold start and cold running as it heats up the intake temps... ALso helps with emmisions.
Alot of people bypass them so it doesnt heat up the throttle body! Alot of TT boys do this mod on theirs as well ( i have  ). |
Brett Moloney
DieHard
Queensland
Supercharged UZZ31
Posts: 577
Reg: 07-2005
|
I was just talking to Lew about bypassing that on my car yesterday. Why do we try and get all this forced cold air through the throttle body only to heat it up again. |
Anish Varsani
DieHard
QLD
V8 UZZ30
Posts: 559
Reg: 07-2005
|
The breather should connect to the black elbow below the one you have circled on the right hand side.
It should currently be blocked off since your breather is vented to atmosphere.
The two you have circled are coolant lines. |
Anish Varsani
DieHard
QLD
V8 UZZ30
Posts: 560
Reg: 07-2005
|
Where is your idle control motor? |
Anish Varsani
DieHard
QLD
V8 UZZ30
Posts: 561
Reg: 07-2005
|
Dont' worry, I just picked it out on the picture. |
Neil Griffiths
Goo Roo
NSW
I have a Cadillac  and a Supercharged Manual V8 
Posts: 4245
Reg: 07-2005
|
Make sure ALL goes back together as you have removed.. |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 157
Reg: 11-2006
|
i have put it back just how it was. that elbow on the throttle body goes back to the rear of the supercharger. so what are all the possibilities for that breather to be smoking? what ever is causing that is more than likely causing the problem i am having with it |
Neil Griffiths
Goo Roo
NSW
I have a Cadillac and a Supercharged Manual V8
Posts: 4249
Reg: 07-2005
|
The elbow is for the ISC.
Fix the miss, then we talk about the smoke. |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 158
Reg: 11-2006
|
ok. it idles great drives great but still goes funny at 2000 rpm. but only under load. if i accelerate slowly it just cruises past that point |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 161
Reg: 11-2006
|
guys i had a compression test and cylinder 5 is at 45!!! the rest are between 158-160. anyone know how to resolve this?! also i can't get my hands on new rotor buttons, distributor caps and leads and i want them asap |
Damian Ware
DieHard
Victoria
UZZ32
Posts: 597
Reg: 10-2005
|
Doesn't look good mate. |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 164
Reg: 11-2006
|
yeah its either rings, valves or piston. well thats the things i'm thinking |
Miles Baker
DieHard
Vic
66 Mustang GT Convertible, 55 Chevy Bel Air, 69 Firebird 455, 73 Corvette 4sp T-Tops
Posts: 957
Reg: 08-2005
|
Could be anything from a stuck open valve to a scored bore. Probably not a hole through the middle of the piston though. A good leakdown and borescope operator can probably tell you.
Had any work done to the actual block? Might be cheaper to just throw yours away and get a decent second hand long block. They are generally pretty cheap because there isn't much demand. |
Joshua White
TryHard
Qld
SC400 GT V8 Supercharged
Posts: 165
Reg: 11-2006
|
Long block? yeah i just don't wanna go ripping the engine out if i don't have to that's all. she ran beautifully, never a beat out of place until she sat at this painters and god knows what he's done |
Anish Varsani
DieHard
QLD
V8 UZZ30
Posts: 566
Reg: 07-2005
|
Might have taken it for a fang without warming the engine up. Mine pings until it reaches operating temperature. |
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