I need help! My 2002 S210 Hijet is giving me some problems. The little guy all of a sudden began starting hard and running rough. You can feather the throttle and get it cleaned out and it will idle and seem to run fine. As soon as you get on the gas again, it starts popping and cutting out like it's missing real bad. I thought I had some bad fuel so I changed the plugs (which were pretty fouled), and drained the tank. I filled it up with some good fuel and some injector cleaner and ran it for awhile. It is dramatically better, but still falls on it's face and starts popping and missing when you get on the throttle. It idles nice and smooth and revs up nice once you get past the popping and missing part. I did remove the air filter and found half of it eaten by a mouse so I removed the air box clear to the throttle body and cleaned it all out. Soaked the throttle body with some carb cleaner and made sure there was nothing stuck in there. I also pulled the exhaust off the manifold to verify that I didn't have a plugged up converter. At this point I am suspecting the fuel pump in the tank, or the computer. I can't find a fuel filter on this thing anywhere, so it either doesn't have one, or it's up under the tank where no idiot would put one. Can anyone give me some suggestions, or other things to check? Thanks, Jeff.