first the only mds to the car are a k&n intake,shimmed wastegate,megan downpipe and catless 3' exhaust.Whats happening is when i'm driving down the road and let the car slow down WITHOUT pushing in the cluch or using the break(car doesn't do it if i press the clutch and or brake ) the car will smoke its whitish in color my first thought was bhg but i change the headgasket when i got the car(titan mhg and arp hardware).I'm not lossing coolent or oil as far as i can tell and the oil looks like it was just poored in and the car is pulling 20 vac anyone got any ideas? maybe the turbo
smokes when i decelerat
- Thread starter themadhatter
- Start date
Sounds like turbo seals. My car does the same, but it's only enough to smell...I don't ever see any smoke behind me.
My previous turbo did something similar to that, and was a bad AFM dumping extra fuel on decel
Just a thought
Just a thought
Extra fuel isn't going to be white.. Could be turbo seals.. While car is at idle if you rev it and let off do you see any white smoke??
My car just recently started doing the same thing. Ive known i needed a new turbo for awhile because i started to get the death wine, but i guess the seals have went out.
kinda new to turbo's......when you say turbo seals, you talking about the seals inside the turbo, correct? and if so, does the turbo have to be sent out for rebuild or is it something you can fix yourself???
Valve stem seals might give you this symptom also...
Did you replace them when you did the HG?
Daddycat--I'd really leave that to a shop...
Did you replace them when you did the HG?
Daddycat--I'd really leave that to a shop...
Naw, valve stem seals won't usually do this when you let off the gas after accelerating. typically it's just the opposite: hitting the gas after idling but the worlds not perfect. thats blue/grey oil smoke tho not white
turbo coolant seals is my vote
turbo coolant seals is my vote
ive had the same issue for years....
thought it was the turbo.. so i got a new one. still smoking.
thought it could be a rings, after i replaced the motor, still had the problem.
im almost positive its the turbo seals... and its a common problem with all turbos
good luck
thought it was the turbo.. so i got a new one. still smoking.
thought it could be a rings, after i replaced the motor, still had the problem.
im almost positive its the turbo seals... and its a common problem with all turbos
good luck
I'd say turbo seals or valve stem seals. Under deceleration you pull more vacuum than under acceleration which if the valve stems are old and or worn out could cause them to leak. And the smoke would be blue if it goes through the combustion chamber, if its going straight to the exhaust it would be white.