There is this soft knocking from front my 2004 forester xt. Can be heard best at around 1200 rpm, I had a weight on the gas pedal holding it at the exact rpm where it can be heard best. No noises in higher rpm, can faintly be heard between idle and 1500rpm. I dont think its pronounced enough to be a big end failure, its a somewhat softer knocking noise. Also, the noise remains even with the accessory belts removed. Any ideas of what it could be?
any help is appreciated!
thanks!
Youtube video of STI with bad belt tensioner. Sounds kinda similar doesnt it? The engines in both videos are even spinning the same rpm.