E39 523i misfire please help

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  1. E39 523i misfire please help 
    #1
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    longy82's Car Details
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    2000 w reg 523i manual 158000 miles. after changing coilpacks injectors I have found that cylinder 6 is the problem the plug that goes to the injector stops working so shuts that injector off??? If you drive the car it's perfect if its ticking over for a min it misfires but if you turn the car off and start it back up its fine again if you drive it but leave it to tick over it goes down on that cylinder but again its the power going to that injector does that mean my Ecu is on its way out??? Any help would be appreciated. Thanks Matthew
     
     

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    skiwet's Car Details
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    Hey was wondering if you have had any luck with your problem as it sounds very similar to the problem I'm having
     
     

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    marly2012's Car Details
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    same here exact same problem atm!!
     
     

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    quarrymark's Car Details
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    sounds to me like the engine e.c.u is turning off cylinder 6 it could be the e.c.u that is faulty but i have also seen this problem being caused by the coilpack wiring loom and a leaking inlet manifold gasket the electronics in the last two cases will shut down the cylinder to prevent further damage
    read the fault codes it will should tell you misfire cylinder 6 with cylinder cutout if this is the case check it for air leaks first if none found find a coilpack wiring loom at a local breakers yard
     
     

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