while engine running a spark comes from crankshalft pully every 15 or 20 seconds on 2001 Hyundai Santa Fe

you can see the spark and hear it as you look at the pully

Asked by for the 2001 Hyundai Santa Fe
There is a bolt that holds the lower timing cover on that has backed out and is touching the crank balancer!! No problem at all to remove it and repair the problem. That's my guess. In any event the pulley comes off easy after removing the bolt! Pull it and see what up.
agree with wetry
3 more answers , 1 more comment
bring it in and get the mech. to look at it.
i'm a mechanic never seen this problem before looks like a misfire but engine don't change runs smooth
Verify your Belts, some belts make static and you see under car or with a test light put close to damper then you can see the spark.
The spark is jumping from the serpentine belt to the's static electricity. To prove this, spray a little water on belt and the spark should stop.