hullo all
noticing blueish smoke coming from the exhaust when i put my toe down,clears up after about 15mins though.
Engine is a 1.6td jx and does'nt seem to have lost any power as its still nice and pokey when you give it some gas,will it be piston rings? valve seals?,i have recently had the fuel tank cleaned out of sludge and water would that have anything to do with it?or is the engine in a state of terminal decline?anyone in the coventry or west midlands area fit new ones?
p.s is'nt using excessive oil either
cheers
blueish smoke from exhaust
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yorkshireTraction
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yorkshireTraction
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Re: blueish smoke from exhaust
anyone???
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kevtherev
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Re: blueish smoke from exhaust
p.s is'nt using excessive oil either
...but it is using oil isn't it.?
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yorkshireTraction
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Re: blueish smoke from exhaust
checked it today as i do every sun and put a 1/4 of a litre in which is the 1st time in 4 weeks ,admittedly i dont use it every day but ive done roughly 400 miles in those 4 weeks,is this more than i should be putting in?kevtherev wrote:p.s is'nt using excessive oil either
...but it is using oil isn't it.?
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kevtherev
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Re: blueish smoke from exhaust
there should be non or very little loss of oil
the blue smoke is oil being burnt.
various tests would have to be carried out to determine what has worn.
the turbo seals, and with the head off, gaskets and the back of the valve heads can be checked for heavy burnt deposits indicating wear in the valve guides
bores can be checked for ovality or over size.
And finally ring wear or breakage would cause smoke.
As it's a small amount...personally I'd live with it until you can afford to have it all sorted out....as it might get expensive unless you can do all this yourself
the blue smoke is oil being burnt.
various tests would have to be carried out to determine what has worn.
the turbo seals, and with the head off, gaskets and the back of the valve heads can be checked for heavy burnt deposits indicating wear in the valve guides
bores can be checked for ovality or over size.
And finally ring wear or breakage would cause smoke.
As it's a small amount...personally I'd live with it until you can afford to have it all sorted out....as it might get expensive unless you can do all this yourself
AGG 2.0L 8V. (Golf GTi MkIII)
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ewenmaclean
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Re: blueish smoke from exhaust
Hello,
if you were burning oil from rings or valve guides I'd probably expect this not to clear up after 15 minutes. I know it seems a daft question, but are you sure it's blue? For the first 15 minutes the diesel is probably still warming up - is it possible it's whitish and the timing is a bit retarded? Have you checked the timing and do you ever use the cold-start advance?
Kev is right about turbo seals - if this is excessive, or your crankcase pressures are high, then you'll be passing a lot of oil back into induction system which is getting burnt off. This is normal on a diesel in very small quantities, but if there's loads of it, then it will "pool" and for a while it will be burnt off as you start, then after a while it'll have burnt off all that is sitting around.
For the amount you say being burnt I'd live with it - if you can clean out the inlet manifold as this can get bunged up and doesn't help smoke levels.
Ewen
if you were burning oil from rings or valve guides I'd probably expect this not to clear up after 15 minutes. I know it seems a daft question, but are you sure it's blue? For the first 15 minutes the diesel is probably still warming up - is it possible it's whitish and the timing is a bit retarded? Have you checked the timing and do you ever use the cold-start advance?
Kev is right about turbo seals - if this is excessive, or your crankcase pressures are high, then you'll be passing a lot of oil back into induction system which is getting burnt off. This is normal on a diesel in very small quantities, but if there's loads of it, then it will "pool" and for a while it will be burnt off as you start, then after a while it'll have burnt off all that is sitting around.
For the amount you say being burnt I'd live with it - if you can clean out the inlet manifold as this can get bunged up and doesn't help smoke levels.
Ewen