I have a 90 blazer, i drove it to the store couple months ago and it would not start. only signs of a problem prior were it would turn over 4-8 times before it would crank. i have replaced spark plugs (and there getting spark), wires. distributor cap, button and the ignition module attached to it. i rebuilt the throttle body and fuel pres regulator and changed the fuel filter. haven't been able to get it to even try to start even tho its getting air fuel and spark. The rotor button is turning and points to where it should at top dead center so timing chain isnt broken. it has me stumped... any help would be greatly appreciated. I am new to the site but looks great, thanks in advance. my email is dead_ent_sm0k3@yahoo.com