1987 Cadillac Brougham spark plugs?

I got into an accident front end crash not too bad but now when I get in the car and try to take off I have to press the gass down all theway to get it to go anywhere and if the car isnt warmed up I press the gas down all the way and it takes about a min of holding the gas down until it gets to 30 and im not sure if that is a timing issue or if it is a spark plug issueany ideas of help will be greatly apprieciated