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    #1

    White exhaust smoke and power loss

    Hi Guys,

    I do currently have a big problem with my M54B30 swapped E30.
    I was driving down a mountain road for 15min without any throttle, after that, I turn the engine off and had to pick up something at the local shop. 5 minutes later I came back and started the car, an incredible amount of white smoke came out of the exhaust (smelling like burned oil). Well to be honest I was extremly afraid so i tuned it off immediately.
    Went to the engine to check oil level, all ok its half way full.
    So I turned it back on and the smoke amount decreased quickly, I drove the car back home up the mouintain, but to be honest I feel that the car has less power especially at low RPM's and I lost a fair amount of throttle response, if i touch the throttel it feeld like it takes 1/4 second till it starts accelerating.

    Anyone any idea what this could be?
    Cank Case ventilation shouldnt create power loss ?
    Valvbe stem seal same, shouldnt create power loss ?

    Vanos have been done nor even 2000km ago
    Car was running absolutely great before with strong acceleration at low rpm's

    Please help me in somehow
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    #2
    first outright guess is a possible head gasket. white smoke often indicates coolant in the cylinders.

    Comment

      #3
      Coolant is completely clean, also oil cap shows no sign of contamination. Also the smell is defintily oil, not coolant.
      • Likes 1

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        #4
        Originally posted by julianholzner View Post
        Coolant is completely clean, also oil cap shows no sign of contamination. Also the smell is defintily oil, not coolant.

        could be the ccv but i would expect it to be more blue smoke than white. a lot of swaps do a ccv delete / catch can which eliminates the problem. like you mentioned, i wouldn't think a significant power loss would come with a tired ccv.

        Comment

          #5
          It was effectively the CCV, change it with one from VALEO and all was fine.
          • Likes 1

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            #6
            Originally posted by julianholzner View Post
            It was effectively the CCV, change it with one from VALEO and all was fine.
            good fix. congrats and thanks for posting the results.

            Comment

              #7
              Check for shadow codes for camshaft sensors, too-
              if the DME doesn't like the cam sensor signal at startup, you get slightly reduced power and throttle lag.
              The sensor is usually working, and a switch- off and restart will cure it- until the next time.
              My fix was a swap for another used original sensor. Same signal, the car liked it better...

              t
              sometimes science hides the answers, and we're reduced to using magic.
              now, sometimes I just mess with people. It's more entertaining that way. george graves

              Comment

                #8
                Hello guys, back to the same issue. Filled up some oil and drove down the mountain without acceleration. At the end of the mountain when i stopped the car engine stalled. I restarted and lots of blue/white smoke... TO me it looks like it sucked all the oil in again.
                Made 2more kms and car was back to normal, power normal, no issue. took off oil cap and there is some high amount of vacum in there. Can it be that this new Valeo CCV failed again?
                Can anyone lead me into catch can install on this engine? I think its time to do so, to fincaly exclude the CCV completely of this issue, not that its a complete different problem

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