Hi and thanks for using 2CarPros.com.
I think I just sent you information on timing marks. LOL Regardless, it could be a timing issue or several other things. Things such as fuel pressure, engine vacuum leaks, needing a tune up. Can all cause a misfire.
Here are a few links that may be helpful for you. Take a look through them and see if they help.
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
This link shows a newer car with OBD2,. However, read down through it and you will locate info on spark plugs, engine compression, spark plug wires.
https://www.2carpros.com/articles/engine-misfires-or-runs-rough
Let me know if this helps or if you have other questions.
Take care,
Joe
Monday, September 3rd, 2018 AT 6:39 AM
(Merged)