is there any way to check it other than taking it to the dealer? Reason I ask is I fixed all the other stuff in my earlier thread but I do not have the acceleration I previously had and I can hear spark knock. I'm thinking maybe the timing belt jumped a notch from a couple backfires but I don't want to start taking things apart if there's an easy way to check it.

2001 Sportage, TJ 106's, Everet spacers and bumpstops, Bilstein shocks on the rear, cone filter, Crager wheels, 235-75-15 Goodyear tires. Custom front winch bumper by Dave Scott. Currently DOA, but it is a work in progress.
2011 Kia Forte EX