Doc,
Something strange happened. I started my '91 Astro Van a couple weeks ago after letting it set for about 5 weeks, started right up. I moved it about 50' and put it in park to idle for a few minutes while I got my junk together... it sat there idling perfectly for 4 or 5 minutes, then suddenly the idle went up high as if someone was gently pushing on the gas pedal, then the "Check Engine" light came on and it started loading up, blowing black smoke from the tailpipe, running really rough and eventually conking out... now it won't start. I put a new cap and rotor on it because the old ones looked pretty worn... still won't start. It's getting plenty of gas because you can smell it after cranking it a few times, but it's like it's not getting any fire. Got any ideas?
-Buck F.