Hey folks, I recently acquired a 99 400f and I'm having some issues. I bought this rebuild kit for the carb http://pages.ebay.com/link/?nav=item.view&id=190948689497&globalID=EBAY-US After the rebuild I finally got it started but only with the throttle applied. So here is what it does. Starts only with throttle applied. Backfires while running with light throttle applied Will not idle. Will accelerate fine under moderate to full throttle with no backfiring. I have a YouTube video of the first run you may or may not get a better understanding Please keep the comments bout the video to yourself It was just the first ride in the subdivision.