Werid noise from toyota corolla grande 2016 on acceleration

uacreatives03 (UAhs) 2022-02-19 00:09:11 +0500 #1

Hi Pakwheelers
I just bought toyota corolla grande 2016 model around 97000km driven. The engine condition is great and I am getting around 11.5-12km/l average in city. But on accelerating, I hear a weird noise from engine bay like a hissing or like some air leakage noise. This weird sound is only audible when accelerating and as soon as I leave the gas pedal or use light foot, the sound stops. I got it checked from couple of mechanics but they all said this is normal.
Any pakwheeler facing similar issue or can someone guide me troubleshoot this issue? I am using liqui moly 10W40 engine oil and recently changed CVT oil as well

haseeb.basharat 2022-02-19 06:41:49 +0500 #2

From where and how did you change cvt oil? Which cvt oil did you use?

uacreatives03 (UAhs) 2022-02-19 14:30:18 +0500 #3

Got it changed from a workshop in i9 islamabad. The oil was genuine CVT oil in black tin. They removed the pan from under the car, poured out all the oil and then added new one

haseeb.basharat 2022-02-20 05:13:49 +0500 #4

You car has been fed with a wrong oil, probably a fake one. Toyota cvt-fe oil never came in black packing. That's automatic transmission oil not cvt. Old packing was of silver color, and new packing is of white/red color.
Go to https://www.facebook.com/RehmanAutosdiagnosis/
Get two cvt-fe oil cans from Hamza younus autos in saddar rawalpindi. Drain, measure and pour same quantity. Do it 3 times to change all the 7.5L oil in cvt. Get it done asap otherwise you will be changing a very costly transmission. Even a used one costs 1 lakh+.