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My V70 Xc Awd, White Smoke


3gkvalvo

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White smoke all the time? A lot or just a little?

White smoke is usually just condensation build up, if it's anything more then that would be more head gasket related but you would know real quick if that was the issue.

What does it smell like? oil, or steam smell?

Also have you ever replaced your PCV system as you could have built up crankcase pressure.

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an update on my inherited problem: the previous owner changed the oil to synthetic, and claims that the car started smoking white, then changed back to regular oil and added seafoam to correct the problem; however the car still have white smoke at start-up and excessive smoke under load. i will be checking the evap system and i am hoping that it is plug or maybe replacing will correct the problem. no codes were found on the computer and the oil is clean, no sign of water in the engine.

any sugestion will be greatly appreciated. i will start correcting any suggested ideas as they are posted.

thanks to all.

cruzievalvo

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how thick is this white smoke that's coming out of the exhaust? does it smell like under the coolant cap, or like under the oil fill cap? and what if you just finish a highway drive, will the white smoke be still the same? or worst? or gone? i know a few people who have switched to synthetic oil, although i don't notice smoke right away, but they do loose quite a bit of oil.

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how thick is this white smoke that's coming out of the exhaust? does it smell like under the coolant cap, or like under the oil fill cap? and what if you just finish a highway drive, will the white smoke be still the same? or worst? or gone? i know a few people who have switched to synthetic oil, although i don't notice smoke right away, but they do loose quite a bit of oil.

very thick white smoke, press the gas pedal, i can not see anything behind me, smell like burnt oil or could it be the seafoam that was added to the engine? car can not be driven, too much smoke and thick.

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very thick white smoke, press the gas pedal, i can not see anything behind me, smell like burnt oil or could it be the seafoam that was added to the engine? car can not be driven, too much smoke and thick.

have you done a clean synthetic oil change after the seafoam treatment? i know sometimes seafoam does create quite a smoky exhaust fumes. but from what i know it is the intake cleaner part of the seafoam product that does that. it may be that the synthetic oil being very thin and free flowing at it's given viscosity, and has seeped through the worn out oil seals either on the valve stem, cylinder head gasket, or the turbocharger. (that's if you are 100% sure that it smells like burnt oil. good luck!!

p.s. i used to have a similar problem like yours, if i had it idle, it would smoke like hell after a while. what i ended up doing is replacing the valve stem seals, all 20 of them <_< when i pulled them out, there were hard like plastic as appose to soft rubber, that didn't help the sealing of the oil in any way.... and plus i've been running with amsoil for all this time i've owned the car... previous owner didn't use synthetic, but they did oil change on a very regular intervals of 5000km (about 3000miles or so). i then switched to synthetic, and guess what?? oil seals that was good for the petroleum based oil was not good enough for the amsoil synthetics, i've done many oil seals and plus the PCV system.:lol:

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have you done a clean synthetic oil change after the seafoam treatment? i know sometimes seafoam does create quite a smoky exhaust fumes. but from what i know it is the intake cleaner part of the seafoam product that does that. it may be that the synthetic oil being very thin and free flowing at it's given viscosity, and has seeped through the worn out oil seals either on the valve stem, cylinder head gasket, or the turbocharger. (that's if you are 100% sure that it smells like burnt oil. good luck!!

p.s. i used to have a similar problem like yours, if i had it idle, it would smoke like hell after a while. what i ended up doing is replacing the valve stem seals, all 20 of them <_< when i pulled them out, there were hard like plastic as appose to soft rubber, that didn't help the sealing of the oil in any way.... and plus i've been running with amsoil for all this time i've owned the car... previous owner didn't use synthetic, but they did oil change on a very regular intervals of 5000km (about 3000miles or so). i then switched to synthetic, and guess what?? oil seals that was good for the petroleum based oil was not good enough for the amsoil synthetics, i've done many oil seals and plus the PCV system.:lol:

will changing the oil to regular 20w50 make a difference, i need to clear that smoke, it is a burden in a residential area.

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will changing the oil to regular 20w50 make a difference, i need to clear that smoke, it is a burden in a residential area.

well, i would actually go with a regular 10w30 like what the manufacture recommended just to see what happens... even if it didn't work out, it's not that big of a price to pay. if regular 10w30 worked out, try a synthetic blend next time, if that worked out fine, then go on to full synthetic... if worst comes to worst the full synthetic didn't work out, go back to the blend and stick with it... running very thick oil in the engine when you really didn't need the purpose of 50 weight oil is just going to hurt your gas mileage.

try it out and see what happens, just keep us posted up here as most of us are welling to help out! :D good luck! :D

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  • 4 weeks later...

well, i would actually go with a regular 10w30 like what the manufacture recommended just to see what happens... even if it didn't work out, it's not that big of a price to pay. if regular 10w30 worked out, try a synthetic blend next time, if that worked out fine, then go on to full synthetic... if worst comes to worst the full synthetic didn't work out, go back to the blend and stick with it... running very thick oil in the engine when you really didn't need the purpose of 50 weight oil is just going to hurt your gas mileage.

try it out and see what happens, just keep us posted up here as most of us are welling to help out! :D good luck! :D

Good evening volvo loyals, it has been a while, but finally got the white moke problem fixed: the turbo needed to be change and now i have to drive the car until all the oil that was stored in the muffler dissapear, or change the muffler at $2000.00 price tag. lots of rattling sound when driving, no loss power or codes, any ideas.

thanks for all the help.

3gkvalvo

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changed the turbo but have you done the PCV system? VERY VERY VERY rare for a turbo to fail. So I am suspecting that you had a bad PCV system, the pressure found a way through the turbo. Once you replaced the turbo that kinda fixed it and now you will likely have the pressure released through another area!

Once the car is up to running temperature, does the dipstick tube smoke while idling?

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  • 4 weeks later...

good evening all, it has been a while, just enjoying driving my sweet v70xc awd. i had to remove the drive shaft since it was making that annoying noise, i will buy a rebuilt one once the holidays are over, so for now it is a regular fwd. the white smoke is practicaly gone and no oil out of the muffler when i hit the turbo. i want to thank the forum for all the help and hopefully i will be posting more issues if any in the future. the forum has been very educational and i read lots of issues with this model, but being aware of then makes driving the car a pleasure. volvo for life!!!! so far '94 850, '96 960, '98 s70 and 2k v70xc love then all and will not sell then, will pass then on to the kids.

thanks all

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