So i cant seem to figure out whats wrong with my friends 94' LS ! He had a couple burnt valves that got replaced but we got the head back on & eveything put together & it wont start. The distributer was going out so we put in a new one & still are getting nothing ! I tried to start it using some carb cleaner to see if we werent getting fuel & that dosent work so it must be the spark right ??? Any help with this would be much appreciated !