Engine misfires have many causes so there can be a lot of things to check to find them. SureTrack community member schoolhouse2021 had a Civic Hybrid in their shop that had misfires on all cylinders, They posed the question to the community, and with the help of fellow community member DAG1365 and others, they were able to resolve the issue quickly.
Diesel engines can be sensitive to fuel quality even though they employ several filters to remove water and other contaminants. But one contaminant in particular is harder to handle. SureTrack community member kenscssvc had a Ford F350 Super Duty diesel in the shop that was hard to start and ran bad when running. They posed their question to the community, and with the help of fellow community member powerstroketech1 and others, they were able to resolve the issue quickly.