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Looks like they're the wrong plugs for your car (assuming you installedmthem correctly). You can check the gaps by buying a gap tool and getting the gap specs for your car. Also check with NGK and make sure you have the right ones and that they were pre-gapped.
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--Marcelo
'06 Arctic Metallic 325i | Sport Package | 6MT | Dinan Stage III suspension | Dinan exhaust | 330i manifold swap! Click here! | Active Autowerke tune | 135i Brake Calipers | Deiselboost caliper brackets | E46 M3 front rotors |