My 1999 maxima 5 speed has 240+ k miles. I need to replace the knock sensor, and I'm going to take off the intake manifold because it's a California emissions car and there is all kinds of hardware related to the swirl chamber thing, can't can a wrench under the intake manifold to remove the knock sensor.
So anyway, I figured I should service the injectors while the manifold is off. They are original with 245,000 miles. So any opinions? should I just get new injectors? or should I send them out? Does anyone have a recommendation for a reputable place to send them for rebuilding?