How do I check the fuel pressure....I have a 94 s10 blazer with a digital dash...I see gauges for oil pressure....temp....gas....battery...and tach

get a fuel pressure guage...about $20...and make sure you have the adaptor to fit to the fuel rail..it has a port like a valve stem on a tire..

How do I check the fuel pressure....I have a 94 s10 blazer with a digital dash...I see gauges for oil pressure....temp....gas....battery...and tach

Why do you want to test the fuel pressure...do you have other engine problems...and is this a 4.3L V6 Wseries?