91 gmc 5.7 no run issue

When cranking there is no fuel from the throttle body. Dropped the fuel line on both sides of the filter that was replaced last fall and have good flow before and after the filter. If I spray starting fluid down the throttle body it will fire. Switched out the throttle position sensor and idle air control valve to no avail.
it used to die after warming up every so often at a stop light but would start right back up, now it just quit and wont start ???

Fixed it... bad distributor