Mustang1994

I have a 1996 Ford Mustang GT that I let a friend borrow, and he drove it about 10 miles with a knock, when I troubleshot it the car had about 1 to 1 1/2 quarts of oil. I changed it and now I hear a good knock around 2500-3000 rpm, but on idle its smooth, and the engine still has good amount of power, engine has about 125,000 miles on it.

cliffyk

Most likely one or more big-end rod bearings have "spun"...

DRAGUL

Not good you need to check the oil level on a regular basis, but now the damage is done.

boss_dude_429

Bad boy let a bearing go....

Mustang1994

Is this something that is fixable or need another engine

Mustang1994

Yep googled spun bearing means new engine, least give me an excuse to modify the motor

cliffyk

"Spun bearing" does not mean "new engine" until such time as the rod(s) let go and come through the block.

It does mean pulling the engine, then the oil pan and seeing what things look like in there...

Mustang1994

Ok will drive till it dies then plan on getting another motor at some point

LilRoush

I'd fix it. Having a rod come through the block on the road can be a VERY bad thing, for you and other driver's.