Blazer crank but no start but has spark i think

Try spaying some fuel down the throttle body to see if it fires off. If it does then there is a fuel issue. And the distributor has to be planted in right on or she will not start. One other thing I had one where the spark looked good but the coil had a crack in it allowing the spark to jump to ground.

I ant try sprayin fuel cuz shop said my fuel is ok they think its my distrubtior if i fix distrubtior wat else culd be reason for it cuz fuel ok n i jus bought new distrubtior... wat else

Fuel pressure, leaky spider injector assembly, no power to the injectors, timing, (distributor properly installed) coil.

If your blazer isn't starting but cranking and sounds like fuel starved I changed fuel pump worked fine after that then I had another issue it wouldn't turn over found the distributor cap and button was no good and you have to tighten it down good cause if it rains or is any humidity it will not crank