RS4 (B7 Platform) Discussion Discussion forum for the B7 Audi RS4

Hard starting and misfires

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Old 11-30-2018, 05:38 AM
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Default Hard starting and misfires

Hi guy needs so help I got a rs4 b7 enginecode bns
the problem I’m experiencing is that where I try to start the takes like 15 secs to crank up once it does feels like it’s misfiring
no fault codes
but on the misfire counts I get on cylinders 7
i changed spark plugs coil pack even brand new injection on number 7

i had it by 5 different people no 1 can help me out
Old 12-20-2018, 04:01 AM
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Originally Posted by Iggswp
Hi guy needs so help I got a rs4 b7 enginecode bns
the problem I’m experiencing is that where I try to start the takes like 15 secs to crank up once it does feels like it’s misfiring
no fault codes
but on the misfire counts I get on cylinders 7
i changed spark plugs coil pack even brand new injection on number 7

i had it by 5 different people no 1 can help me out
Five different shops? Or people
Look in the local forum for recommendations for a good shop. Have you had a carbon clean
Old 01-10-2019, 07:01 AM
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Originally Posted by Iggswp
Hi guy needs so help I got a rs4 b7 enginecode bns
the problem I’m experiencing is that where I try to start the takes like 15 secs to crank up once it does feels like it’s misfiring
no fault codes
but on the misfire counts I get on cylinders 7
i changed spark plugs coil pack even brand new injection on number 7

i had it by 5 different people no 1 can help me out
if you changed injector, how was the carbon looking, was it clean? check get vagcom - check vacumm line that runs to the airbox. , from the front/center of the intake manifold.
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