Chevrolet Astro 4.3l

This is the chisronization and perfect time

That order of companion that you give me is one of those who already try to place as you give it to me and see the same thing, someone knows if it does not open another order of vortec that is not 4.3 and try if any change if you go to solve the problem I would write so that this one is already a data of security for that type of vans
thanks

If you say that you already checked spark, pulse of the injectors, pressure of the pump, synchronization and on time and still does not start ... in your case I would review the compression of all the cylinders, they could be low or probably have some bent valves and therefore aviers explosions

Ok what Othoniel says is an option but before doing what he says, all the salacines xq there is a footstep. Retrings