I'm a bit desperate as I've been having issues with my 2015 Q50 that are getting worse by the day. Here is the timeline of events which may or may not be related. The car is only 36K. I'm 46 but drive like I"m 96, so this car has been well kept. I change the oil every 6 months.
1 - About 2 weeks ago I replaced the 2 air filters, cabin filter and brake pads
2 - During the filter replacement, I noticed both enclosures where the air filters rest were not closing properly. I ordered these already.
3 - Days later I began having issues in the morning where the car would hesitate for a moment while going around 20-30 mph. Later it was fine and that was all. No noise, just some jerking.
4 - Progressively the car started making a strange noise in the morning and the hesitation/lagging got bigger. Now I need to drive the car for about 15 min before it goes back to normal
5 - No warning lights are showing up.
6 - I took the car to 2 mechanics, but their computer did not detect anything wrong.
Someone told me it could be a vacuum leak. Others tell me it could be Mass Flow Sensor or the Ignition coil packs causing a misfire. Another person told me it could be the fuel regulator and yet another the timing belt.
Can anyone please help me out by pointing me in the right direction? I will truly appreciate your comments.
The following video shows the engine and demonstrates the noise it makes
[/b]https://www.dropbox.com/s/fobgqqp2pe9ht ... e.mp4?dl=0
Click on the video link.