BMW 318i engine squeal

[pnozell]

1995 318i engine noise, loud squeal after the engine warms up.
Yesterday I replaced the water pump, belts, and tension pulley. Started the engine and after it warmed up the noise is back. I then ran the engine without the AC belt, still squealed. Took the tension off the belt for the alternator, power steering, started the engine and it still squealed. I believe I eliminated all accessories, the noise seems to be in the inside of the engine, it does seem to go away a bit when the engine is revved up. Would this be the bearings in side of the engine? Under the valve cover or main bearings on the crank shaft? Would a low or no oil pressure cause it from lack of lubrication?
Engine has 220k miles on it. Am I looking at a whole engine replacement?
Advice on engine replacement?
I did change out the automatic transmission at 198K by myself, not sure if I want to take on an engine replacement. Transmission was a big task.

Can you pull engine and transmission out together?

Thanks,
Paul

[mholbrook38]

Could be a tensioner in the serpentine belt going south.

You do know you are posting this in the Porsche 911 section, right....

[DaveE]

Put a Porsche engine in it.

Or a small block chevy.....


On my 2002 I always pull the engine/gearbox together.

[JFairman]

Originally Posted by mholbrook38

Could be a tensioner in the serpentine belt going south.

You do know you are posting this in the Porsche 911 section, right....

FWIW, BMW motronic 318i motors use an internal chain to turn the cam and distributor. There is no serpentine belt like a 325 six cylinder motor.
It's a descendent of the 2 liter 2002 and 1981 and later 1.8 liter 320i CIS motors.

Great simple and easy to work on motors too.