If the engine is excessively noisy on startup (after the engine has been off for several hours) and the noise lasts more than four or five seconds, turn off the engine and check for correct engine oil level. If the oil level is correct, the noise may be caused by the timing chain tensioner. Kia released an updated timing chain tensioner to solve this problem.
Updated Timing Chain Tensioner to Correct Noise on Startup on Kia Sorento
Average mileage: 92,497 (10,800–153,000)
Engines affected: 3.3L V6, 3.5L V6, 3.8L V6
17 people reported this problem
noisey on start up after setting 1-2 hours just bought vehicle. have to take back to dealer.
2011 Kia Sorento - 3.5L V6 87,000 mi, Visitor
Makes irritating rattling noise upon startup. Bought extended warranty but dealership claims warranty company won't fix unless the noise lasts "longer".
2008 Kia Sorento - 3.3L V6 44,175 mi, Visitor
on start up of a cold engine, it makes a horrific noise and if setting for 2 hrs on startup...kinda scary???
2006 Kia Sorento - 3.5L V6 150,000 mi, Visitor
engine makes bad noise upon initial cranking in the morning. oil level is good and oil is maintained
2011 Kia Sorento - 3.5L V6 77,000 mi, Visitor
Vehicle making unsettling noise when started after sitting for several hours. Dealership told me I have to have my Cam Shaft replaced and that it would be SEVERAL THOUSAND DOLLARS to fix.
2011 Kia Sorento - 3.5L V6
Problem is same as others stated in there response ; after car has set idle for at least 2 hrs, rattle or clicking noise at start up. Mileage 83,000 mi. Had check at dealership 2 weeks ago & was told " That just the nature of the vehicle " or " We believe it is the fuel pump " , but I do have to admit I bought the car second hand , out of state & the dealership in state has made good on warranty work several times & a couple times at quite an expense to them & no cost to myself !!!
2009 Kia Sorento - 3.5L V6 153,000 mi, Visitor
loud knock on start up doesnt go away, oil level low, put in new oil, oil is black sludge, was mixed with synthetic and 30 weight , putting in new engine, need timing for a 2009 sorento chains.
2008 Kia Sorento - 3.5L V6 71,000 mi, Visitor
loud tick at start up until warmed up and then will slighting leave ,, sounds like a timing chain
2005 Kia Sorento - 3.8L V6 143,000 mi, Visitor
Just got the car 2 weeks ago. Several mornings upon cranking the engine it has bade a horrible clanking/screeching sound. Dealership I'm buying it from thinks I'm crazy and they don't open till after 9 and I never have the problem after cranking it first thing in the morning. I'm paying 11000 for the car when is all said and done I refuse to fix it less then a month into buying it, but at least now I can tell them what the heck is making the noise.
2007 Kia Sorento - 3.8L V6 107,000 mi, Visitor
timing chain make noise on startup for abount 3 second
2007 Kia Sorento - 3.8L V6 88,000 mi, Visitor
same issue , makes noise at startup