the truck cranks. fuel pump works (i could hear it). since i didnt have spark, i change the coil. didnt work. i changed the crank sensor and it still didnt start. before the truck stopped working i had trouble starting the truck when it got warm. it will start perfect when cold though..... hope this is enough information for you guys. thanks....

 

spider injectors? guy just brought one with the same problems. 30 minutes fix, 250$ish at advance. crank it and pull a plug see if your getting fuel to the cyl.

 

thanks.....

 

late model 4.3s are finnicky. fixed a blazer doing this a fe months back. they must have a minimum of 50psi of fuel pressure to run. less than 50 and the injectors won't fire. so alough the pump is running it may only be putting out about 45 psi which will not ope the injectors.