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White smoke on deceleration any ideas?


Rome

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Wondering if someone could enlighten me what could be the cause?

as far as im aware white smoke is coolant witch would explain why i\'m constantly topping up my header bottle

No signs of coolant mixing with the oil no signs of overheating and the turbo has been recently been put on (new)

Any help would be great

Cheers

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its been happening ever since i purchased the car like 8 months ago

it mainly happens when i go downhill or over a bump in the road,

if its the head that cant be to good :/.it did manage to pull 260kw on the dyno recently so im not sure how much effect it has on performance

think i may need to start putting some money away just in case something goes haywire

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Blown Head Gasket :-\ Your probably pressurising your coolant system under boost. Under vac or deceleration it\'s sucking coolant into your bores and out into the exhaust.

-Losing coolant.

-Steam/White smoke out exhaust.

-A TK/dye/coolant test will show exhaust gasses in your coolant.

-Probably low on compression on one cylinder too.

It\'s possible that the previous owner removed the thermostat to hide the blown head gasket?

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turbo is an amr t60r

there\'s a breather filter on the drivers side crank case

hose coming of the intake manifold going to the right side of pcv t junction

passenger side crankcase has a hose coming of it going into the oil catch can

and there\'s another hose going from the other outlet on the oil catch can going into the other side of pcv t

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I know it is a long shot but see if you can smell the smoke( get some one to follow u or u follow some one driving your car)

could be oil ( can be white depending on where in the exaust system it is introduced :))

if oil on overrun then check valve stem seals

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I vote head gasket, I had the same symptoms in my race car, didn\'t overheat, no oil in water or water in oil, only things wrong was a bit of white smoke on deceleration and loosing a bit of coolant, I thrashed it for a year before we checked it, the leak was between the layers in the head-gasket.

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 Rome said:

turbo is an amr t60r

there\'s a breather filter on the drivers side crank case

hose coming of the intake manifold going to the right side of pcv t junction

passenger side crankcase has a hose coming of it going into the oil catch can

and there\'s another hose going from the other outlet on the oil catch can going into the other side of pcv t

Your drivers side head breather is VTA through a breather filter, your passenger head is going to a catch can and your main block breather is straight to the throttle body via pcv valve?

RE the HG/Cracked head. It could get worse and catch you off guard, get red hot and do even more damage. I\'d be getting it sorted asap.

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 Rosssub']

[quote name='Rome said:

turbo is an amr t60r

there\'s a breather filter on the drivers side crank case

hose coming of the intake manifold going to the right side of pcv t junction

passenger side crankcase has a hose coming of it going into the oil catch can

and there\'s another hose going from the other outlet on the oil catch can going into the other side of pcv t

/quote]

Your drivers side head breather is VTA through a breather filter, your passenger head is going to a catch can and your main block breather is straight to the throttle body via pcv valve?

RE the HG/Cracked head. It could get worse and catch you off guard, get red hot and do even more damage. I\'d be getting it sorted asap.

Yeah,Thats exactly how its hooked up is that the correct way?

i\'m currently saving for a blueprinted short block with some nice juicy cams to go with :\') so it just has to hold out till then

Pretty sure its gotten worse over the year only used to smoke going down hills etc..

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You could try some Bars stop leak or block seal to keep it going longer?

I have all 3 breathers (2heads1block) going into my catchcan, no breather/filter. Then catchcan straight to intake. My PCV valve is blocked off at the TB.

You only have 1/3 of your breathers going into the catchcan, sort of defeats the purpose I guess?

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