Probably the BIGGEST noob question you will ever hear... but i am curious... But what does and engine tune up consist of? my 1991 is in need of a "tune up" im sure! dont think it has any work done to it but still runnin strong!
thanks guys.

 

Well u got spark plugs and wires, distrubitor cap and rotor, a pcv valve(i believe thats what its called), replace or clean fuel injectors, u can do a radiator flush and the 1 thing i think makes a world of difference is new O2 sensors.

 

Might as well get the oil and oil filter replaced while your at it

 

Cap
Rotor
Plugs
Plug Wires
Carb and Choke Cleaner
SeaFoam
Air Filter

There is no PCV valve on a 4.0L, just a CCV. Yes there is a difference.

 

Ah. Thanks for the correction