INPA Smoothness -- on a E31 840ci

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  1. INPA Smoothness -- on a E31 840ci 
    #1
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    Deklan325's Car Details
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    Hi guys,

    Ive been having some issues with an E31, that started missing after long journeys, turned out to be coil packs, however it was quite complex trying to find the faulty ones! Got there in the end, however i though i would be able to use inpa to help a little, so i selected the smoothness setting and it seems the read out was very strange, show that cylinder 1 and 8 were in the middle and the rest were near the bottom?? Can any one shed some light on what the smoothness is a read off and is the reading im getting now correct indicating the miss has gone, it does seem to have??

    Cheers
    Dek
     
     

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    #2
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    dailydoggy's Car Details
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    think its the same as the rough running test and its showing how much fuel correction is going on to each individual injector and cylinder to even out the engine running...

    if you have possibly corrected the fault you need to reset the adaptions and take it for a good blat for a few miles then recheck...
    330i sport a big chunk of berlin...

     
     

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    Deklan325 (20-07-2011)

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    #3
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    Deklan325's Car Details
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    Cheers for coming back to me, il reset them this weekend and take it for a spanking and hope that sorts it Il post back the results hopefully that will be the end of the little problem has been a nightmare to sort, new gaskets becuase of oil leaks, new coil packs becuase of them being drowned in oil! and all sorts of bits including a new sump!!!
     
     

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    #4
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    joylove's Car Details
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    As I understand it the rough test is a measure of the rotational energy provided by each cylinder. Unless the car continues to misfire or any of the readings are marked "!" then leave it alone.

    EDIT: Resetting the adaptations is fine, needs doing every once in a while. Do not do it while the engine is running. Expect rough/high idle for the first 100 miles. I think it's in the ANALOG1 menu on your vehicle, but I cannot be certain.
     
     

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    Deklan325 (20-07-2011)

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    #5
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    Deklan325's Car Details
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    Ok il give it a go and see what happends Cheers
    Deklan
     
     

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