how do i check fule injection control module ?
You should probably just replace it as they don't cost that much ---- https://www.accuratediesel.com/shop/225.html
thanks I replaced the fuel injector module and got it down to 4 code po401 po299 po284 po275 now it smokes real bad black so I put on a egr valve censor. still smokes real bad black. help please
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