So, I have my 2004 Excursion with 207M miles on it. I was noticing just today and thinking "Wow! This thing is running great!" Smooth as can be, engine just sounds happy. Not 10 minutes after that, it starts missing. Runs like one cylinder is out. No noise, no smoke, just acting like an injector is sticking. I changed the oil about 2 weeks ago, so the oil is nice and clean. Rotella T6 Synthetic with 2 bottles of RevX. I'm assuming it's one injector. That's how it's acting.
Here's my question. I don't want to just throw $1600 in rebuilt injectors in it. They supposedly were replaced about a year ago just before I bought the truck, but of course, I have no proof of that. How can I find out which injector is bad? As you all know, it's not as easy as the old GM diesels where the injectors were on the outside of the engine and you could just cap off one at a time until you found the bad one.
Any help would be appreciated.