Q: Bank 1 air fuel imbalance alarm car is misfire after it gets hot ok up till that time

Hi there. Check the spark plugs and see if the plugs have a good bold spark. If the plugs are not sparking, then either the plugs are fouled out or the ignition coils are not energizing. Check the fuel injectors and see if they are working. Remove one injector harness at a time on the engine and see if the engine hesitates even more. If the engine begins to shake, then the injector is working. If there is no change to the engine, then the injector may not be working or the cylinder could have an issue. If the spark plugs and fuel injectors are working, then check the compression on the cylinders and see if there is 150 psi or more. If a cylinder is 120 psi or less, then there is an issue with the cylinder, like the rings not sealing, the valves not sealing or burned, or the head gasket could be burned. If you need further assistance with diagnosing your misfire, then seek out a professional, such as one from Your Mechanic, to help you.