[metalman55]

okay, so after a couple days of running fine, it went right back to doing the same thing. total bummer. so i removed the fuel injectors to take them in and have them professionally cleaned, and i couldn't help but notice that my intake manifold was coated in a thin layer of black gunk that seemed to be coming out of cylinder 1 (goes into the other intake pipes progressively less as you go towards #4). not only that, but there are shiny silver metal shavings in the cylinder 1 intake. this combined with the cylinder 1 missfire, and hesitation under load like i mentioned before. what do you think?