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What Is The Source Of The White Smoke

RipNGrip

By RipNGrip,
in Engines & Forced Induction

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RipNGrip Collaborator

RipNGrip

Posted
Posted

Hey guys,

Recently, I was just pulling up at my mates house when a cloud of white smoke. First i thought head gasket right...... lots of white smoke but my idle is fine and she revs fine so i put it down to maybe water after the storm. Next few days driving to work intermittently clouds of white smoke. I thought maybe it was a overly restrictive breather system that i installed but its fine i think. I have ex and in connected to each other then to catch can and catch can to intercooler piling. blocked PVC

So far i have these opitions:

1. small leak in the head gasket which means i should start to get lumpy idle, oil in coolant and in stuff under the oil cap.

2. Its a valve stem which i have no idea to diagnosis or what the F it is

3. turbo seal... therewas some white smoke coming from the dump

oil or water?

helpplease :dry:

Bl4cK32 Grand Master

Bl4cK32

Posted
Posted (edited)

1. Small leak in headgasket is one of the most likely the cause. It could be a leak from the coolant gallery to the combustion chamber only, which would allow coolant to burn (white smoke)

U wont get oil in the coolant always from a blown hg.

2. Valve stem seals allow oil to drip into the chamber and would burn off blue smoke. Only usually in the mornings when the oil has had a chance to drip down. No chance.

3. Could be a turbo seal. Same deal, coolant being burnt (white smoke.)

radiator places can do a test on the coolant to check for exhaust gas in it (forgot the name) Id advise to stop driving the car, or take it easy until u can get it tested.

Edited by Bl4cK32
RipNGrip Collaborator

RipNGrip

Posted
  • Author
Posted

IF it helps... i had oil on the bonnet and in the engine dip stick blown out! blow by (i think it is called) I had the same catch can setup with only diff now being the adapters which are quire restrictive. the PVC is blocked. in and ex linked and than to catch can > to intercooler. and i raised boost recently! can revs feel in neutral

Al Grand Master

Al

Posted
Posted
IF it helps... i had oil on the bonnet and in the engine dip stick blown out! blow by (i think it is called) I had the same catch can setup with only diff now being the adapters which are quire restrictive. the PVC is blocked. in and ex linked and than to catch can > to intercooler. and i raised boost recently! can revs feel in neutral

Can you retype that, as i can't understand what you have written?

From what i have made out: You can not have your catch can feed into your intercooler piping, as you'll be pressurizing the system. The "venting hose", coming out your catch can, should vent into the turbo intake pipe (the pipe between your filter and turbo) or vent into atmo (illegal, but commonly done).

What do you mean by saying "PVC is blocked off"?

Some good pics would also help us determine whether your catch can is installed incorrectly. I have seen people attempt to install these themselves and do it wrong. If you pressurize the "system", you'll be forcing oil through the piston rings, seals, etc., thus causing oil to be burnt (hence the white smoke) and possibly causing damage to the engine.

RipNGrip Collaborator

RipNGrip

Posted
  • Author
Posted

The catch can setup involved the following: 1. intake cover and exhaust cover linked 2. the connection between the intake cover and the pcv valve on the intake manifold has been blocked 3. the linked exhaust and intake covers are feed to a catch can 4. the catch can is plump back into the intake piling between the air pod and turbo

is this correct?

post-36695-1197796877_thumb.jpg

bubba Grand Master

bubba

Posted
Posted

I think if you block the PCV you need to vent to atmo, not feed it back into the intake pipe.

Mine is setup as follows:

PCV blocked. IN & EX cam covers linked, then to catch can, vent to atmo.

RipNGrip Collaborator

RipNGrip

Posted
  • Author
Posted

Well,

i performed a dry compression test today on all 6 cylinders with WOT and warm engine. All came back with 130 psi across the board. I checked the oil cap and there is no excess air and the oil seems to be the right viscosity. Radiator doesn't buddle or have oil in it. The exhaust doesn't imediately give out white smoke the warmer the more the smoke i get.

Any ideas anyone?

DCIEVE Mentor

DCIEVE

Posted
Posted
awesome........ could it be a restrictive breather on teh catch can creating increased crankpressure

easy to eliminate, remove hoses from breathers - if it still happens then you've at least ruled that out but i doubt thats your problem. i would perform leak down also

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