I have a 2001 Chevy S-10 with a 2.2L engine. Was running fine and all of the sudden a POP and the engine died. The engine cranks over plenty fast, in fact it almost sounds like it has less resistance than normal. There are no check engine codes. What could it be?
The engine has a common timing chain tensioner failure. When the timing chain tensioner comes apart it allows part of it to wedge itself between the timing chain and the timing chain sprocket. When this occurs, the chain snaps!
You can perform a comprssion test and see if yiu find a cylinder or 2 without compression. This happens because the valves are stuck without movment. Removing the timing cover and inpecting is a way to confirm this has happened as well.