My 1992 chevy 2500 4x4 with a 5.7 L motor won't start. There is fuel at the motor but no spark. I have changed the dist cap, rotor, ignition mod, and the coil the plugs and wires are only 1 yr old. I had the main computer changed about 6 months ago with a reman. The viechel has about 140,000 miles on it it is my wood cutting and hauling truck, so bieng winter in Wis I am getting very frustrated with itmad:

TxGreaseMonkey

. Check all underhood and underdash fuses with a test light or multimeter:

http://www.askmehelpdesk.com/cars-tr...tml#post252145

. Check for power to the distributor. If none, check the ignition switch for wear, pitting, or melting.