R56 n12 misfire

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Jun 9, 2025 | 05:34 PM

Rh1988

Thread Starter

1st Gear

Joined: May 2025

Posts: 21

Likes: 5

R56 n12 misfire

Hi guys im in some serious need of help i bought a 2010 mini cooper base r56 it had misfire codes for cylinder 1 found it had a cracked exhaust valve in cyl.1 lapped new valves in the head did timing chain kit new headgasket pistons and cylinders looked in good condition new thermostat housing the guy i bought it off did new injectors coils plugs and cam sensors. while i was doing motor i did entire color change the car ran fine around the shop just finished reassembly and took for first road test and im right back to my beginning point other than the car looks new lol misfires in cyl.1 codes are 2772, 2773, 2782, 2783 im very bummed out had this posted in the wrong section so i figured i would move it here

Jun 12, 2025 | 05:04 PM

Maybe, maybe not

6th Gear

Joined: Jul 2023

Posts: 1,355

Likes: 190

Swap cylinder 1 and cylinder 2 (or cylinder 3 or cylinder 4) spark plugs. Do cylinder 1 misfire codes move to new cylinder? Do same for the cylinder 1 coil.

Jun 12, 2025 | 08:34 PM