car started running lumpy yesterday, just got home from maybe a ten minute drive and car vibrating, strong smell of eggs coming from exhaust and did not clear when revved. took to garage and they said misfire from failed coil pack, took it back today to get pack replaced. No difference. checked with voltmeter and no pulse coming form number 2 coil pack or lead. Anyone help, is this a common problem? Any help appreciated. I am waiting for a vw/audi specialist to call me back.