Hey

08 s80 3.2 misfires on start only. Sometimes it fails to start or struggles and does. Only happens one in 10 times. Other times it just takes an extra second to start.

Tried moving cylinders and spark plugs, misfire moves to a different cylinder but doesnt follow thw coil or spark plug. Tried changing all coils and spark plugs. Still nothing. Been doing it for about 2 years and check engine light comes and goes

 

how many miles on the coils? have you tested fuel pressure to see if it is too high or tool low at start up?

 

Already changed the coils and plugs multiple times trying to fix so less than 1k miles

Never tested fuel pressure. Mostly cause i don't know how