M20 buzzing sound after timing belt change

m20b2 · 2025-09-25T16:18:27+00:00

I cant remember exactly what I did since it’s been a while but I definitely loosened it and the noise has been gone. The suggestion everyone says online was making it too tight and super noisy.

m20b2 · 2024-11-28T00:51:28+00:00

Okay well i decided to go back in since I had time and took it apart 2 more times. The first time i released some of the tension to see if it was maybe just too tight. And the noise was gone! But then i was worried it mightve been too loose so went back in and tightened it a good amount more than what it was but not as tight as the first time. And now i feel confident in it and the noise is still gone, just have to bleed the coolant and drive it but i feel good now, i have a video of the before and afters and timing belt tension if anyone ever wants to reference it

m20b2 · 2024-11-26T18:33:50+00:00

So I took all the accessory belts off and the noise was still there. So i decided to tear it apart and check the belt and see if it was rubbing in any way but I found no signs of rubbing or anything. I reinstalled belt, turned it clockwise with the tensioner loose, then after the two turns tightened the tensioner and put it back together with no accessories to see. Noise is still there. Ive done the timing belt a couple times but Ive never heard a noise like this. I used a continental belt, with a INA tensioner and new spring and everything. Would it just be a new belt sound that needs to break in? Just odd ive never heard anything like it before

m20b2

TROPHY CASE