BenzWorld Junior Member
Date registered: Mar 2009
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dont know what to do.... help!!!!!!!
i own a 2007 c230 sport with about 27000 miles. I took it to the dealer because i was hearing this strange noise under my hood when the car is running high rpm... at first they told me it was spark knock so use 91+ octane i was running that in the car anyway so they told me to empty out the tank as much as i can and put fresh fuel in it. they even put gas additives in it. about three days later i got the gas very low and put fresh gas in it. that didnt work so i called them and they said T.A.C said that bring it in they will test some things out and they will figure something out. two days later i came got the car and what they found out is that its the intake runners thats making the noise. they said its when the short runners is swicthing to the long runners and its normal to mercedes benz standard.. so i test drove a car same one that they had at the lot but with 16000 mile didnt hear it they told me its because its a lil bit newer but eventually it will make the same noise. any one ever had this problem or heard about????:All C230 with V6 2.5 engine they said it will all make the same noise eventually. is this true??