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    Vito v6 om642 white smoke

    that will be to easy to give up)) Sorted, job done. Conclusion : wrong back pressure sensor, first one i bought expensive one ''Original'' made in Germany from ebay for 68pounds , it showed about 400hpa more that is should be, i think is that one absolute or relative sensor...
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    Vito v6 om642 white smoke

    today trying to disconnect sensors one by one live i have noticed disconnecting MAP and MAF sensors back pressure gone down, ordered MAP sensor today i have noticed readings before it gives out of range pressure and data from xentry with these sensors disconnected revs up to r000rpm
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    Vito v6 om642 white smoke

    thank you for understanding , now is more that a principle to have it done as i gone too far spending my time and money. So far i suspected catalytic but i still think its not this the problem, as flow are very good from exhaust at idle i feel it around 1.5metre, also i have done another...
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    Vito v6 om642 white smoke

    suspecting catalityc converter blocked i undo cat from dpf , pressure dint changed, and then i undo bolts between turbo and cat and back exhaust pressure gone down as it should but i have checked with inspecting camera catalytic looks clean inside(i think), i bought some cataclean to give it a go
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    Vito v6 om642 white smoke

    still no progress , i am thinking why exhaust back pressure drops quick at around 2000 rpm, its turbo activating or egr kicks in
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    Vito v6 om642 white smoke

    ok, so now i am stressed as code come back but is not going in limp mode anymore code 2641-008 , back exhaust sensor changed already also i have changed MAF sensor (to make sure), please someone give some hints as i am nearly ready to give up
  7. V

    Vito v6 om642 white smoke

    Changed exhaust back pressure sensor with brand new genuine one, code is not coming up anymore even after hard acceleration, but sometimes still i can hear turbo whine/whistle after 3000rpm, just a interval from 3000 to 4000rpm.(maybe a boost leak somewhere). How to check MAF sensor on this...
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    Vito v6 om642 white smoke

    Update , I have done forced dpf regeneration with xentry, all gone successfully ,first 2minutes a lot of smoke but then clear till the end of regeneration about 20minutes, temperature raised around 630 degrees . Smoke disappeared. Took van for a drive test drove about 15minutes coolant...
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    Vito v6 om642 white smoke

    Hi everyone. I have done some work on my vito v6 with engine om642(DPF) and now i have excessive smoke.(before work was normal, no smoke, this way i excluding injector/s fail, also egr cooler as coolant stay same level, clean ) work done: - oil cooler seals - swirl flaps removed(they was stuck...
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