My '87 OMC 3.0L chevy I/O is running great EXCEPT after running for about 45 min continuously it will all of a sudden stall out, it totally loses ignition. Wait about a minute and will start right up and run for about 5 minutes and die again. This happens at WOT and idle. I take it home and will run for over an hour and never kill. But take it out next day and will run for 30-45 minutes and kill. It had electronic ignition before but doesn't last more than a year before burning up. Last point system lasted over 3 years before i replaced them.The reason for replacing them was because of the above problem.I ruled out fuel problems.<br />It has a brand new:<br />- coil<br />- points<br />- plugs & wires <br />- battery.