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i have a 92 civic dx and most times it starts fine with no problems but there is some times like maybe once or twice every week when i try to start it it just cranks. sometimes after like 15 mins or so of letting it sit ill try to start it again and it'll start or ill just get it jumped ... im not sure what could cause this if its my fuel pump, idoelizer ... im pretty sure its not my alternater or starter