ironmike4134 Posted August 16, 2011 Share Posted August 16, 2011 How much vacuum should a 91 V6 produce? My car suddenly dies after 20 mins or so, then is a hard restart... replaced the distributor (optic sensing unit) and fuel regulator... dies less often now, but still does it.The vacuum is 20 when I read it off the line to the fuel regulator.:confused: Link to comment Share on other sites More sharing options...
Guest Jim_McNally Posted August 16, 2011 Share Posted August 16, 2011 20 inches of vacuum at idle sounds about right for a naturally aspirated engine. Jim Link to comment Share on other sites More sharing options...
TwinCamFan Posted August 17, 2011 Share Posted August 17, 2011 Vacuum sounds fine. In my experience a TC that dies 'when warmed up' or after prolonged running is a fuel delivary issue, likely culprit the fuel pump itself...Alan Link to comment Share on other sites More sharing options...
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