White smoke - Lots of it!!!

[pieman]

So after getting the RS running again it bellows piles of white smoke out of the exhaust. I mean piles and piles of white smoke!!! which smells quite bad too.

Now it never used to do this, apart from cold, and maybe a little at idle. So since last running I have been pulling it apart over the last year, internally the engine has stayed stock, I've added a VF23 and a pile of other bolt on mods.

Now that it back together its running, idles nice and smooth I haven't been for a strop as its not registered.

It will badly need a tune, but I want to make sure I have as much sorted before it goes on the dyno, as fixing probs on the dyno costs more than I have.

I did a compression test before pulling the RS apart and got nice even compression across all cylinders. Usually I hear white smoke is a sign of a head gasket fault, but given this wasn't happening before I pulled the engine down, I'd be surprised if the gasket failed while the car sat round for a year.

What other causes could there be for heaps of white smoke? could it be a turbo problem?

Thanks

Q

[THUNDA]

blown turbo seals id say, but cant really tell without looking at the car

[Joker]

Anti freeze is a good smog agent in hot exhaust (used in real life Spy cars/anti terrorist measure)

head gasket?

[pieman]

Cheers, that was one of my thoughts as the turbo is new to the mix, and wondered if that could be letting water into the exhaust perhaps.

Joker, no antifreeze in the water just yet, only filled it up with water to get the car up and running.

Head gasket was my thought but as mentioned I've done a comp test which was fine, I know it can blow into the exhaust side too, but as mentioned it wasn't doing it before I had it off the road, so I'd be surprised if a gasket would blow with the car sitting around.

q

[THUNDA]

did you get the turbo from a reliable source or off trademe?

[pieman]

turbo was brought from a fellow clubsubber, so I'd hope its ok.

[THUNDA]

hmmmm interesting

the majority of people on clubsub are genuine so id say maybe you put the turbo on wrong rather than the turbo being poked? not that hartd to put a turbo on though, sounds like blown turbo oil seals to me

[pieman]

So how do you verify a blown turbo oil seal then?

q

[THUNDA]

usually when the oil seal blows it lets oil into your red hot exhuast system causing it to burn and come out the exhaust, or if you have an exhuast leak from anywhere it will come out there look

did you connect you oil lines up correctly? maybe you have and outlet on your inlet? pretty hard to get mixed up but meh

[Pappu1]

yea i agree with thunda - oil seals most likely

although u couls also check the water in the radiator - if its head gaskit , u will lose water and also can do a test (forgot name right now) that checks for chemicals present in the cooland for combustion material

[pieman]

Sounding like the restrictor in the oil feed line, VF23's have a smaller feed than the TD's and I'm using the TD05 one.

[Pappu1]

 pieman said:

Sounding like the restrictor in the oil feed line, VF23's have a smaller feed than the TD's and I'm using the TD05 one.

so true.. i think in the old forum ther was a thread on this and they recomended that the oil pressure was too much causing oil to leak out of seals

hmmm question - based on the info above - would that be true for vf22? - does it use a smaller feed than a td04 (not 05) specifically...

[gotasuby]

could be leaking injector seals?

[Guest]

 gotasuby said:

could be leaking injector seals?

Bet me to it, damn you Jason!

But seriously, does it smell like a metric gas tank full of petrol is pouring out your exhaust?

[Swindog]

 pappu']

[quote name='pieman said:

Sounding like the restrictor in the oil feed line, VF23's have a smaller feed than the TD's and I'm using the TD05 one.

/quote]

so true.. i think in the old forum ther was a thread on this and they recomended that the oil pressure was too much causing oil to leak out of seals

hmmm question - based on the info above - would that be true for vf22? - does it use a smaller feed than a td04 (not 05) specifically...

My vf22 had a 0.9 feed apature but needed bigger, hence the blowed up bit. Id bet at 1.2-1.5mm so it shouldnt be too much more. So i wouldnt be thinking in this case too much oil feed.

[pieman]

Easy enough to try the restrictor.

How would I check if it is the injector seal? that is possible as I had all the injectors out.

q

[WRXER]

I had the exact same issue, and for me it turned out to be an injector seal failing.... Pumping out white white smoke, smells heavily of fuel, and the worst fuel efficiency ever.......

If it is indeed this, I'd be careful about driving it due the engine being flooded with fuel, don't want to run the risk of bore-wash... Also make sure to do an oil change, I had a heap of petrol floating at the top when I did an oil change afterwards.

[pieman]

Ahh OK, another possibility then, so how do you find it was the seal? how did ya tell which one it was?

Thanks

q

[Swindog]

Just out of interest did it have any other probs like no power or boggin down or high idle or anything?

[pieman]

I haven't driven it other than out of the garage and then back in, can't really given its a track car.

But it did feel a bit weak getting up the driveway, why you ask?

q

[gotasuby]

unbolt the injector rail off the manifold and get someone to prime the fuel pump by turning the key from acc to ON while you lift the rail up and check for and fuel dripping underneath rail. there should be no fuel when key turned to on, only when key turned to start

[Swindog]

 pieman said:

I haven't driven it other than out of the garage and then back in, can't really given its a track car.

But it did feel a bit weak getting up the driveway, why you ask?

q

I just have abit of white smoke and idles quite high sometimes especially when you close down and sit at lights. Maybe totally unrelated but you gotta ask. Prob condensation though as it sits for a week at a time. Could well be my o2 sensor though for the idle as its the only thing ive touched recently.