hey yall i got a 86 lasaber non turbo but it started nocking relly bad some reason i hurted off my car and it was fine then when i turned it back on after puting in gas in it , it started nocking bad idk what is wrong i just got the car and i am only 17 and my mom isnt no more wiser then me lol but we cant aford to get a macanice to check it out so give me some hints here plz