on a 2003.5 MSP - what does it take to get to the fuel injectors and the o-rings? is it easy access? I do not have the MSP yet, picking it up soon probably - and the o-ring needs to be replaced.
From online a protege5 and being able to look at it I think you will just have to take off the fuel rail and pull it out. There right on top of the motor. I could be wrong though