Good news and bad. A lil help to diagnose guys

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Azman
    S2Forum Possessed
    • Sep 2005
    • 3205
    • Country: United Kingdom

    #1

    Good news and bad. A lil help to diagnose guys

    Hi all,


    Good news first - Decided to keep the S2 and when baby comes along I will be driving her car to work and she the S2 for 4 days of the week and then I can take it for a quick blat to work to keep the engine tickety boo.

    Now the bad........

    Okay so two days after deciding to keep it had the car washed brought it home, polished from top to bottom to asses stone chips, scratches etc perfectly fine on the run to the handwash (only done that way as in the afternoon I was off to axminster - long run from rugby).
    Okay start the car up to go leave to idle for a min and then caught something out the corner of my eye. Plumes of smoke coming from the rear. Get out have a look and yup lots of grey smoke out the back. smelt it - sweet like fuel no burning of oil smell. Okay Rev it a little and it goes away back to idle tis there again, rev again and hey presto clears and gone.

    Next then. drove to Axminster (managed 30.7mpg on the way down and back ) left overnight started the next morning and the same. Started the car and went to sand behind it. timed it at between 40secs to 1 minute after starting for the smoke to start without reving teh engine. Cleared again after about 5 mins. Now not using water (other than a small leak on the union of the water manifold) not losing oil, oil is still clean after 1.5kmiles since last changed.

    Thoughts. initial was Valve stem seals but that would smoke from the off. Unfortunatley now had anyone been able to stand behind to see if puffs on boost to off to see if turbo. But I am thinking tubo seals leaking when cold then taking a while to be pulled through the air intake system hence the delay to start smoking. Surely valve stem seals would be there straight away as draining straight to the cylinder???

    Cheers

    Aaron
    Dark Grey Avant
    RS2 FARB
    Powerflex Front wishbone bushes
    Alloy Subframe Bushes
  • Azman
    S2Forum Possessed
    • Sep 2005
    • 3205
    • Country: United Kingdom

    #2
    Oo also it does not smoke again if the car is turned off and leave to stand for 15 mins.
    Dark Grey Avant
    RS2 FARB
    Powerflex Front wishbone bushes
    Alloy Subframe Bushes

    Comment

    • Azman
      S2Forum Possessed
      • Sep 2005
      • 3205
      • Country: United Kingdom

      #3
      anyone??
      Dark Grey Avant
      RS2 FARB
      Powerflex Front wishbone bushes
      Alloy Subframe Bushes

      Comment

      • JP
        S2Forum Extremist
        • Mar 2007
        • 1858
        • Country: United Kingdom

        #4
        Have you got a cat fitted? If so this changes the colour of smoke partially. First thing I would check however is breather system. Make sure the lines aren't gunked up with mayo. If the engine can't breath properly you will get small amounts of oil seeping past the turbo seals at idle when there isn't enough exhaust pressure to seal the seals on an ageing turbo.

        hth
        UrS6 Stroker + HTA3586 =

        Comment

        • Azman
          S2Forum Possessed
          • Sep 2005
          • 3205
          • Country: United Kingdom

          #5
          Ah okay thank you

          Is it worth taking the inercooler off to to see if that has an acumulation of oil in?

          Yup standard twin cats fittied
          Dark Grey Avant
          RS2 FARB
          Powerflex Front wishbone bushes
          Alloy Subframe Bushes

          Comment

          • hoffer76
            S2Forum Addict
            • Mar 2008
            • 230
            • Country: United Kingdom

            #6
            sounds very similar to a problem we had with 93URS4Avant's car it turned out to be valve stem seals on inlet side.
            Also seen this problem with a few cars with recon turbo's fitted as it seems to highlight existing head problems, I am sure Nip has same problem link below

            Comment

            • Azman
              S2Forum Possessed
              • Sep 2005
              • 3205
              • Country: United Kingdom

              #7
              Cheers dude.
              Dark Grey Avant
              RS2 FARB
              Powerflex Front wishbone bushes
              Alloy Subframe Bushes

              Comment

              • Azman
                S2Forum Possessed
                • Sep 2005
                • 3205
                • Country: United Kingdom

                #8
                Update

                Okay time for an update

                Was smoking on friday morning, drove to work, drove home, little full throttle blast after coming across an s4 - left on sat - started sunday no smoke, started this morning no smoke

                Guessing breather system needs a good clear out and the little drive i had on friday may have cleared it out a bit

                What you guys think??

                Cheers

                Az
                Dark Grey Avant
                RS2 FARB
                Powerflex Front wishbone bushes
                Alloy Subframe Bushes

                Comment

                • GazzaG60
                  S2Forum Freak
                  • Mar 2007
                  • 4133
                  • Country: United Kingdom

                  #9
                  pop the cap on the rocker cover and fee for pressure. if its there the breather may b be blocked.

                  Comment

                  Working...