Kia Troubleshooting Questions? Ask a Mechanic
Hello I will help you with your question,
Did you replace the tensioner and the idler pulleys when you replaced the belt?
Was the waterpump replaced?
I ma looking for something that would cause the belt to come loose or the pulley it rides on to tilt and throw the belt.
The only other cause would be the cams locking up. If that happened the belt would be the first thing to go.
Let me know if there is anything you can see that would cause the belt not to run true.
Ok, from here I cannot see what is happening so if everything is OK then I cannot help. You need someone onsite to see where the problem lies.
I will OPT OUT of your question and maybe one of the other techs will have a suggestion for you
Sorry I could not help
I can help you, once you have properly aligned your timing marks,properly installed your timing belt, instead of starting the engine ,turn the crankshaft 2 complete revolutions by hand tools only,then retighten your tensioner adjustment, then proceed to start the engine and it will stay tight,( remember when tensioning the timing belt you only want it taught enough to be able to twist belt with your hand half way the width of the belt.) please rate my service a 3 or above, if for some reason you can not, please ask me more questions, i will continue to answer your questions even after you have given your rating until you are satisfied with my answer.