i replace timing belt water pump, tensioner, idle wheel, and it continues to shred at about 90. miles. what else could be the problem? i've replaced it 3 times already.
It sounds like either the belt is not tracking properly or is not tensioned correctly.
TO CHECK TENSION:
Make sure that you rotate the engine clockwise by hand twice and then continue to rotate the engine until the "S" stamp on the exhaust pulley is at 12 o'clock. Then loosen the tensioner hold down bolt and the spring should pull to take up any slack in the belt. Then tighten and check belt deflection between cam pulleys is about 8mm. If belt is too loose then repeat steps to set belt tension.
When it starts to shred, is it walking off of the pullies into the timing cover? If it is, you need to look really close at cam, tensioner, and idler pulleys that belt rides on. Make sure that the pulleys are sitting flat against the motor and spin all of them and check to see if the bearings have any side to side play. This is not a common issue with this engine. Verify that all of the part numbers are correct.
Good luck.
James
Great answer James. Kia as a car manufacturer put a lot of great technical information and work shop manuals on line for free for Kia owners. www.kiatechinfo.com
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