I HAVE A 4.3 LX 1995 I JUST COMPLETED INSTALLING NEW HEAD GASKETS,INTAKE AND EXHAUST MANIFOLD GASKETS,I INCORRECTLY ADJUSTED THE VALVES AND WAS GETTING A STEADY 10-12 HG ON THE VAC GAUGE.I DID A WARM COMPRESSION TEST AND GOT ON 1-3-5 CYLS 140 LBS AND ON 2-4-6 130-140FT LBS, THE MERC BOOK SAYS IT...
