Discussion
Noticed the last couple of times I've started the car that an unusual amount of smoke is coming from the exhaust. Much more than normal. Smells a bit (what exhaust fumes don't I suppose), although the loo roll test shows no dark discharge. It also slows down after idling for a bit and while driving there is no smoke at all, under power or cruising.
Am I being paranoid and is the weather causing more water vapour discharge than normal?
Or is the car about to explode, taking me with it
?
Am I being paranoid and is the weather causing more water vapour discharge than normal?
Or is the car about to explode, taking me with it
?NobleGuy said:
Both exhausts and white.
Both turbos?
If it is the turbos, speak to Universal Turbos (who did all the work and supply to Noble (including the current "new" car). I spoke to them and a refurb is around 360 per turbo, or they can upgrade them for a little more.Both turbos?
Edited by NobleGuy on Friday 4th April 12:33
HTH
Alex
nigelw said:
what is you oil like on the dipstick ? clean or "milky" ?
It's clean. I've been checking this regularly while trying to sort my coolant leak (thought it might be a head gasket causing the boiling over - turned out to be the header tank cap).Took it out at lunch and found no smoking like earlier - did get a whiff of fumes when I slowed for a roundabout. Could it be running rich? I've recently had the fuel pump wiring upgrade done.
Edited by NobleGuy on Friday 4th April 13:48
Hmmm , difficult one , if its not burning oil , or losing water and the oil is clean ! ....it's unlikely to be BOTH turbos at once though . do both exhausts come together at some point before they exit (sorry , I havent looked in detail) if they do , it could be a fault on one bank , if they dont , it must be something common to both .
How bad is the smoke (does it clear quicly , as in vapour ) or does it hang around , as in oil smoke ?
How bad is the smoke (does it clear quicly , as in vapour ) or does it hang around , as in oil smoke ?
If you have the standard factory exhaust it will smoke the same each side so hard to determine if it is a turbo issue (which it could be), you say you have fitted the uprated fuel pump etc, did you have it set up on a dyno ? if not think you should have it checked properly as it could be too rich, does it splutter on start-up ?
nigelw said:
Hmmm , difficult one , if its not burning oil , or losing water and the oil is clean ! ....it's unlikely to be BOTH turbos at once though . do both exhausts come together at some point before they exit (sorry , I havent looked in detail) if they do , it could be a fault on one bank , if they dont , it must be something common to both .
How bad is the smoke (does it clear quicly , as in vapour ) or does it hang around , as in oil smoke ?
The smoke this morning was quite bad (when cold and a bit damp), while this afternoon got no smoke at all. When smoking, it was hanging around a little but was dispersing up into the air. As soon as I got in the car to leave the smoking pretty much stopped and then just the odd smell of fumes when slowing down on the journey in.How bad is the smoke (does it clear quicly , as in vapour ) or does it hang around , as in oil smoke ?
P.S. The exhaust is in two bits to begin, one from each turbo, joins into one at a junction before the silencer then enters the silencer in a single pipe and exits via two separate tail pipes.
Deffo looks like a turbo problem from the symptoms you've described. I had a turbo go and was exactly as you describe - white noxious smoke on start-up that ceases when warm.
If it does turn out to be a turbo, I can thoroughly recommend turbo technics. They can either refurb your existing unit, or exchange your one for a refurb'd one which means your car is not off the road for too long. I got a two year warranty on the re-con'd one aswell. http://www.turbotechnics.com/docs/index.htm
If it does turn out to be a turbo, I can thoroughly recommend turbo technics. They can either refurb your existing unit, or exchange your one for a refurb'd one which means your car is not off the road for too long. I got a two year warranty on the re-con'd one aswell. http://www.turbotechnics.com/docs/index.htm
Lakelord said:
They can either refurb your existing unit, or exchange your one for a refurb'd one which means your car is not off the road for too long. I got a two year warranty on the re-con'd one aswell. http://www.turbotechnics.com/docs/index.htm
Cor. That's not bad. Can I ask how much they wanted?Presumably they don't do the removal/refit.
Sounds like turbos,
On the linked exhaust system there's a little more back pressure keeping the oil back so I'm afraid they're probably well on their way
.
I have found that on the Roush (un-linked) exhaust there is less back pressure and a little smoke is almost inevitable on start up.
Of course you may be able to go for a ball bearing set-up which requires less oil, the oil lines will have restrictors in place so there will be less oil to leak anyway, and you'll have the performance benefit to boot!
F.C.
On the linked exhaust system there's a little more back pressure keeping the oil back so I'm afraid they're probably well on their way
.I have found that on the Roush (un-linked) exhaust there is less back pressure and a little smoke is almost inevitable on start up.
Of course you may be able to go for a ball bearing set-up which requires less oil, the oil lines will have restrictors in place so there will be less oil to leak anyway, and you'll have the performance benefit to boot!
F.C.
NobleGuy said:
Lakelord said:
They can either refurb your existing unit, or exchange your one for a refurb'd one which means your car is not off the road for too long. I got a two year warranty on the re-con'd one aswell. http://www.turbotechnics.com/docs/index.htm
Cor. That's not bad. Can I ask how much they wanted?Presumably they don't do the removal/refit.
Lakelord said:
NobleGuy said:
Lakelord said:
They can either refurb your existing unit, or exchange your one for a refurb'd one which means your car is not off the road for too long. I got a two year warranty on the re-con'd one aswell. http://www.turbotechnics.com/docs/index.htm
Cor. That's not bad. Can I ask how much they wanted?Presumably they don't do the removal/refit.
Any (easyish) way to tell which one of the turbos is being naughty?
Sign of a turbo on the way out I'm afraid.NobleGuy said:
F.C. said:
I have found that on the Roush (un-linked) exhaust there is less back pressure and a little smoke is almost inevitable on start up.
Does this imply that the Rousch exhaust et al could cause turbos to wear out quicker/more often?The design of the turbo is such that it relies on "some" back pressure to hold the oil back from squeezing past the so called "piston ring like" seal.
On a standard system there is a little more back pressure than on a "split" system ala Roush H&S etc.
There is no implication that the bearings will starve of oil thus encourage wear, just that it is easier for oil to seep past the seal with less back pressure.
F.C.
Having given this a little more thought it may be fair to say a "split" system car may well have less mileage from its turbos due to the fact that the oil will leak sooner on a part worn turbo than its counterpart on a linked system fitted car due to the back pressure difference.
Though I doubt anyone would run their "leaking" turbos long enough to test that argument anyway.
Suffice to say most people are living with their current set-ups without worry.
F.C.
Edited by F.C. on Wednesday 9th April 06:55
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