My craftsman mower started missing and blowing black smoke.
I have a model #917.273632 DYT4000 mower with a Briggs & Stratton 18.5hp intek plus motor with only 275 hours on it. I was mowing when it started missing and blowing black smoke. I changed the plug and it was covered with black sute, but that didn't fix it. When I try to start it, it turns over like the battery is dead (the battery is good), or it is out of time. When it does start it doesn't stay running, but while it's running I cannot hear any knocking in the motor. I think it is a valve or it is out of time, but before I start taking it apart I was wandering if there might be an electronic part I might need to check.
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