Yes.

So you have changed the distributors out did you mark the location of the first on? If you just slapped it on their its wrong You changed your timing. When you check your base timing are your shorting your scs connector? Do you have any codes? If you are misfiring you can look at your plugs and see http://www.spark-plugs.co.uk/pages/t.../diagnosis.htm thy will look all black and wet.