my protege 2000 wont make spark after timing belt change
 

hi iam new on this forum and i got a realy big probleme

recently i change my timing belt and head gasket and now my car wont start it will crank but no start and if i remove 1 spark plug and i crank my car i will see 1 spark on each spark plug and then no spark and i know my timing is good so what could be the probleme ?? iam realy lost :(