White Smoke @ Cold Start 2008 C30 HELP!!!
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    1. #1

      White Smoke @ Cold Start 2008 C30 HELP!!!

      Does anyone know what could be causing white smoke at cold start up on a C30 and any suggestions on a fix? I rebuilt the engine last year to stock, no visible oil leaks, no coolant leaks. I was thinking it could be the turbo but I have no loss of power...

      I've taken this to a few mechanics and no one can figure it out. This only happens at cold start-up for about 5 seconds but it's like a freaking vape cloud.

      I'm about ready to put in Blue Devil Stop Smoke but I'm afraid it could screw things up in the long run. Any experience with that stuff?

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    3. #2
      Junior Member
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      a super slow head gasket or worst case a cylinder wall crack? small enough that while running it would not let a noticeable amount in but after sitting, car cools, fluid(s) get sucked into combustion area? maybe try and borescope the cylinders when cold and see if fluid is visible?

      if it's as much smoke as you say fluid should be visible.

      note: this is a completely random guess and I'm just a guy on the internet.

      order I would check.
      1st: determine is oil decreasing? is coolant decreasing?
      2nd if oil: pull off turbo downpipe, intake pipe, outlet pipe and intercooler to look for fluids or signs of fluid. if coolant: look for coolant leaks in same manner also check for fluids in the turbo outlet and intercooler. (basically look for any "external" sources or signs before going for a internal introduction IE: gasket and wall crack)
      3rd: borescope the cylinders when cold for fluid.
      4th: pull head off? check walls?

    4. #3
      Junior Member
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      What does the vape cloud smell like? If it's oil it'll smell a lot different to vap'ed coolant.

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    6. #4
      Member HunterBD's Avatar
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      I agree with the above. Try pulling the spark plugs and inspect them along with the cylinders before starting. If all good then turbo and tubing. Is it all the time now or after driving hard the day before? What am I saying here, it’s a turbo Volvo...its hard to not drive it to the limit.


      Sent from my iPhone using Tapatalk
      05 VR GT Titanium Grey/Nordakp, sunroof, Winter Package, Premium sound with Volvo Sub. VST rear brace, Ultra Racing front strut brace. iPD Sways and other little upgrades they have. EST DP with Touring Exhaust.

    7. #5
      Member Okidiver's Avatar
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      Do a compression check. Cold, then warm. Might give you a lead.
      Rapid Rick...I roll
      2008 C30 Matt Pearl Gold OSD-customized w/Elevate tune
      2015 V60 Seashell Metallic w/Platinum, BLIS, wood

    8. #6
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      do not put blue devil in it...itll plug up your radiator and coolant passages..

    9. #7
      Member HunterBD's Avatar
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      Quote Originally Posted by cbv1 View Post
      do not put blue devil in it...itll plug up your radiator and coolant passages..
      Don’t do it. So what’s going on with your c30?


      Sent from my iPhone using Tapatalk
      05 VR GT Titanium Grey/Nordakp, sunroof, Winter Package, Premium sound with Volvo Sub. VST rear brace, Ultra Racing front strut brace. iPD Sways and other little upgrades they have. EST DP with Touring Exhaust.

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