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  • Blue smoke

    Why do I get blue smoke when my t4 2.5 tdi is cold then soon as warm it clears

    Sent from my SM-G930F using Just T4s

  • #2
    Blue smoke is usually oil. I suspect its valve stem seals. Oil can seep by them over night or when its been stood then when you fire up it gets blown out the exhaust. If its for prolonged periods could still be valve seals or oil control piston rings.

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    • #3
      Its burning a little oil. How many miles has the engine done?

      Sent from my vernee_M5 using Tapatalk

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      • #4
        Originally posted by S49 View Post
        Blue smoke is usually oil. I suspect its valve stem seals. Oil can seep by them over night or when its been stood then when you fire up it gets blown out the exhaust. If its for prolonged periods could still be valve seals or oil control piston rings.
        I agree. If it is at warm up only you have time to save the engine...


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        • #5
          Have you been putting 2stroke oil in the diesel like they've been saying on the 'other'forum?

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          • #6
            Engine has done 130k

            Sent from my SM-G930F using Just T4s

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            • #7
              Why what does 2stroke oil do

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              • #8
                It makes mine run nice and smooth

                Sent from my SM-J510FN using Just T4s

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                • #9
                  Originally posted by daleydub View Post
                  It makes mine run nice and smooth

                  Sent from my SM-J510FN using Just T4s
                  And creates a light haze of blue smoke when cold

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                  • #10
                    I dont get a blue haze. Makes it feel smoother

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                    • #11
                      Guess the smoke or not from two stroke oil would depend on how much you add.

                      I put 100ml with 20 litres of fuel and it quietens down the engine considerably.

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                      • #12
                        is there anything you don't know about a t4?
                        Do you fancy moving to Kent?

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                        • #13
                          There's nothing unique about a t4, at the end of the day it's just an engine and wheels wrapped in our favourite body,


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                          • #14
                            Do they still sell Slick 50? Remember when that was all the rage and the absurd marketing that went with it?


                            Sent from my SM-G901F using Just T4s
                            Last edited by Activ8; 28 April 2018, 11:55 AM.

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                            • #15
                              Originally posted by Activ8 View Post
                              Do they still sell Slick 50? Remember when that was all the rage and the absurd marketing that went with it?


                              Sent from my SM-G901F using Just T4s
                              Guaranteed for the lifetime of your car!!!

                              Sent from my SM-G930F using Just T4s

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