92 blazer engine vacuum at idle
#1
04-02-2011, 09:27 PM
92 blazer engine vacuum at idle
Does anyone know what the engine vacuum on a 4.3 vortec is at idle?
16-20in Hg sound about right?
Here's a nice guide to vacuum readings
http://jerickweb.50webs.com/autobin/vacuum_meter.htm
16-20in Hg sound about right?
Here's a nice guide to vacuum readings
http://jerickweb.50webs.com/autobin/vacuum_meter.htm
Last edited by Cidium; 04-03-2011 at 06:15 PM.
#2
04-04-2011, 03:57 PM
After checking the idle vacuum, jumping 14-19in, it confirms I need head work done. Also, might explain the hunting idle, always thought it was a fuel issue not vacuum. I was wondering does anyone know if a 5in swing in vacuum impact the FPR enough to cause problems at idle?
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