hey i have a 2002 jaguar s type 3.0L v6 automatic car runs rough on idle no check engine light comes on or any stored fault codes.
1 fuel pressure is ok
2 no vaccum leaks checked with a smoke machine
3 injectors hold pressure and all have a nice umbrella spray patteren (no stream)
4 ran the car with a scanner hooked up to it which let me see live data and not once did it a detect a mis fire
5 compression is between 160-190psi

any help would be greatly appreciated reply to the post (personal info deleted )my name is antonio thank you

 

#2 isn't reliable - what are fuel trims?

 

hey man thanks for trying to help but i threw a wild guess and got all new coils and spark plugs car runs like a champ now customer took it home already they are happy we got paid we happy