Question

2004 Isuzu Rodeo 3.5L 4WD with engine code P0303. I have changed the spark plug, and the ignition coil, checked the hoses, and still got the P0303 code. The Check engine light flashes at times when I begin to accelerate, any suggestions?

Answer 1

Hi there,

This could also be a problem with the fuel injector or if it idles rough an issue with a leaking intake manifold gasket. I would try swapping the injector for the one next to it and see if the misfire moves with it. If all looks good there, then I would do a compression test on the engine and see if there is a problem inside.

Answer 2

P0303 Isuzu Code - Cylinder Number 3 Misfire Detected
Read more: https://www.autocodes.com/p0303_isuzu.html