Need help with a friends car if possible.
He's just bought it and its started smoking. It doesn't smoke on start up or when the car is driven on boost.
It smokes when the car is up to temperature and when you park up and let the car run for a while on idle after about 30 seconds white smoke starts to pour from the exhaust, a couple of blips from the throttle clears it again.
I completed a compression test for him and it showed 12 bar across all cylinders when dry.
Does anyone know what it could be?
My thinking is rings, head gasket or valve stem oil seals? Am I heading in the right direction?
Cheers,
Adam
[Mk2] [Turbo] Rev3 turbo smoking
Moderators: IMOC Moderators, IMOC Committee Members
-
- Posts: 2072
- Joined: Mon Jun 27, 2005 4:44 pm
- Location: Hellingly, East Sussex
Re: [Mk2] [Turbo] Rev3 turbo smoking
White smoke is water.
If you can get a garage to do a sniffer test, it will show if the HG is on the way out.
If you can get a garage to do a sniffer test, it will show if the HG is on the way out.
We ALL make mistakes !!!
Re: [Mk2] [Turbo] Rev3 turbo smoking
Cheers bud, I want to get a sniffer test done but a few garages I've rung haven't got the equipment.
Was going to use it as an excuse to get myself a tester
Was going to use it as an excuse to get myself a tester
-
- IMOC Moderator
- Posts: 10902
- Joined: Sat Dec 10, 2005 1:32 pm
- Location: Bonnie Dundee
- Contact:
Re: [Mk2] [Turbo] Rev3 turbo smoking
sounds like turbo oil seals, had the exact same problems on a 200sx with broken turbo seals,
Re: [Mk2] [Turbo] Rev3 turbo smoking
Should have mentioned that I have changed the turbo for him replacing it with my own CT20 whilst I'm building my engine as that was initially where we thought the fault was.
My turbo was fine but has been shelved for three months, could the seals have gone in this time and caused the issue?
My turbo was fine but has been shelved for three months, could the seals have gone in this time and caused the issue?
-
- IMOC Moderator
- Posts: 10902
- Joined: Sat Dec 10, 2005 1:32 pm
- Location: Bonnie Dundee
- Contact:
Re: [Mk2] [Turbo] Rev3 turbo smoking
adam3442 wrote:Should have mentioned that I have changed the turbo for him replacing it with my own CT20 whilst I'm building my engine as that was initially where we thought the fault was.
My turbo was fine but has been shelved for three months, could the seals have gone in this time and caused the issue?
can't say it's impossible, how many miles where on the ct20 etc????
just made me think of my 200sx, the way you said the smoke was pouring out, the smoke i had was awful, i had to turn the car off whilst stationary in traffic, it was like a smoke machine!!!
also, the smoke was really think it reeked!!! it absolutley stank of oil!!!
Re: [Mk2] [Turbo] Rev3 turbo smoking
sheppy wrote:sounds like turbo oil seals, had the exact same problems on a 200sx with broken turbo seals,
Yup. White smoke isn't neccesarily water. If oil is entered into the exhaust post combustion, it gets heated up and not burnt, hence the white smoke.
Turbo oil seals are failing.
Re: [Mk2] [Turbo] Rev3 turbo smoking
Ah see this doesn't smell at all and is very white with a tiny hint of blue if at all.
The CT20 on the car has covered 193,000 KMS running standard boost and no rebuilds or replacements that I am aware of. I bought my car/turbo at 52,000KMS and has always been serviced regularly with good parts.
This turbo now resides on my friends rev3 turbo and his car has covered roughly 70,000 miles. Since my turbo has been fitted to his car it has done less than 100 miles.
The CT20 on the car has covered 193,000 KMS running standard boost and no rebuilds or replacements that I am aware of. I bought my car/turbo at 52,000KMS and has always been serviced regularly with good parts.
This turbo now resides on my friends rev3 turbo and his car has covered roughly 70,000 miles. Since my turbo has been fitted to his car it has done less than 100 miles.
-
- IMOC Moderator
- Posts: 10902
- Joined: Sat Dec 10, 2005 1:32 pm
- Location: Bonnie Dundee
- Contact:
Re: [Mk2] [Turbo] Rev3 turbo smoking
hmmmm, might not be the oil seals then, just to point out, the smoke i had was pure white, and was so thick it was embarrassing
Re: [Mk2] [Turbo] Rev3 turbo smoking
This is white thick and embarrassing.
Luckily its not my car
So you think I'm barking up the wrong tree with piston rings or valve stem oil seals?
I'll need to get some more testing done on it. Thanks for your inputs people.
Luckily its not my car
So you think I'm barking up the wrong tree with piston rings or valve stem oil seals?
I'll need to get some more testing done on it. Thanks for your inputs people.
Re: [Mk2] [Turbo] Rev3 turbo smoking
my ct20b did the same on my old rev2.....
boost and driving ok, well first boost it would smoke a little.
sat in traffic, quite a bit of smoke
i believed it to be oil seals...
something to do with low oil pressure at idle, so seals are more relaxed and can weap oil.
i replaced with another ct20b, problems gone.
boost and driving ok, well first boost it would smoke a little.
sat in traffic, quite a bit of smoke
i believed it to be oil seals...
something to do with low oil pressure at idle, so seals are more relaxed and can weap oil.
i replaced with another ct20b, problems gone.
Re: [Mk2] [Turbo] Rev3 turbo smoking
Cheers Jim, what's the odds aye, two knackered turbo's. Mine was fine when it came off
Re: [Mk2] [Turbo] Rev3 turbo smoking
If your turbo sat on the shelf for thrre months, there's a chance that the oil seals went hard.
As Jim said, when you're at idle the oil pressure is lower and the seals don't "pump" up so to speak, hence letting oil seep through.
A good test is to let it idle when it's hot and start smoking. Then raise the revs to something around the 2k rpm mark and see if the smoke clears after a few seconds. If it does, it's likely to be the turbo oil seals.
As Jim said, when you're at idle the oil pressure is lower and the seals don't "pump" up so to speak, hence letting oil seep through.
A good test is to let it idle when it's hot and start smoking. Then raise the revs to something around the 2k rpm mark and see if the smoke clears after a few seconds. If it does, it's likely to be the turbo oil seals.
Re: [Mk2] [Turbo] Rev3 turbo smoking
Cheers Bud I'll do that tonight.
With that in mind, is there a way to store a turbo without the oil seals going hard?
With that in mind, is there a way to store a turbo without the oil seals going hard?
Re: [Mk2] [Turbo] Rev3 turbo smoking
Can I just top the oil feed up with oil to keep the seals wet?
Re: [Mk2] [Turbo] Rev3 turbo smoking
i can see why people are saying turbo seals mate but 2 knackered turbos would be very bad luck and the oil seals imo would take longer than 2 months to dry out. Get all your tests done first sniff test and an old skool colour tune kit so you can see the spark colours across the bores when it starts to smoke.
Goodluck!!!
Goodluck!!!
DEATH BY NUR SPEC
Re: [Mk2] [Turbo] Rev3 turbo smoking
Hmmm not sure then.
Will let you know when I go and run it for a while and then blip the throttle.
Will let you know when I go and run it for a while and then blip the throttle.