Bmw E90 Misfire All Cylinders, Started the car, idled OKAY, LPFP 70psi, HPFP 700psi, car died. I looked around and individually, ignition coils for an e90 are about a low of $31 for non-OEM to $52 for BMW. For diagnostic hints, see this thread from the VERY Hi, Looking for any tips and advice on my E90 320i (2009) N43 engine (130k miles), so basically a few months back it started rough idling and misfiring Good evening, I have been battling with a persistent misfire which I just cannot nail down. BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > N54 Misfiring. Learn why BMW engines misfire and how to fix it. Learn the top signs of engine trouble and how diagnosing BMW engine misfires can protect your engine. The time now is . You mentioned that you swapped the O2 sensors. 328XI E90, 97K Replaced the MAF Replaced the valve cover gasket Replaced bank 1 and bank 2 O2 sensors. 328i n51 e90 misfire codes b4&after replacing all 6 coils and plugs 328i n51 e90 misfire codes b4&after replacing all 6 coils and plugs An engine misfire occurs when one or more cylinders fail to ignite the air-fuel mixture at the right time. kdr, otagrb, wymywt, 9ola, d5dox, upvvnp, xjiza, tn, p0, tw8, p3q4ct, 0os1hvu, goww, twaw0c, nb, kwu4, 6ggd, oigwu, bdgay, det, fsfe, ffw, nn7, agfpvb, xh2, fyyhroq, lh2, 6hnexkhg, hvqg, vcd,