I have a 99 Trooper I am getting a code that says Cylinder #4 is missfiring. Seeing that is very dificult to find a service manual I was wondering if any body knows for shure. I think it is the front cylinder on the pasanger side but not sure. any help would be aprecated.

Middle cylinder - driver's side.

Bank one is the passenger's side, 1 being the front, 3 the middle and 5 the rear cylinder. 2, 4 and 6 are arranged the same way in bank two (driver's side).

Great Thank you for the info.