Slight whining sound, possible timing belt pulley?

[///eDirty]

84' 325e, has a slight whining/squeal sound from front of engine. I was thinking its possible a v belt is to tight, (just replaced them). I also just replaced the timing belt, tensioner, and water pump. While inside I noted the bigger toothed pulley had a little resistance when turning, it wasn't chunky or anything tho. (Sorry for the ignorant term..lol I don't know what it's called) The pulley with the arrow. Just curious should it have any resistance?

[jlevie]

That sprocket drives the oil pump, so some resistance is normal. Especially on a "wet" engine where the oil system is full.

[///eDirty]

Ok, thankyou.. Yea the engine wasn't drained of oil. Didn't know it drove the oil pump.

[crazyman]

Mine does that now, didn't use to. Replaced the timing belt, tensioner, water pump all other belts still does it. Sounds kinda like a blower whistle but much quieter, it might be how it all sounds. After spending some time and money on it i just decided to leave it. I always change my timing stuff every fall, this time I'll try a different brand and see. I'll let you know if it changes.

[jeffnhiscars]

That gear appears to be the long recalled stamped steel gear which is prone to self=destruction. I suspect your cam gear may be the same in which case both should be replaced with sintered gears.