Here's how you can tell if your 1996 Monte Carlo's engine is locked:
* Inability to turn the engine over: This is the primary indicator. Try turning the key in the ignition. If the engine doesn't even crank (no sound whatsoever, not even a click), it strongly suggests a locked engine, although it could also indicate a dead battery, faulty starter, or other electrical issues. If you're hearing a clicking sound, it's *likely* not a locked engine but rather a weak battery or starter problem.
* Resistance when turning the key: If you feel significant resistance when turning the key, as if something is preventing the crankshaft from rotating, it's a strong indication of a locked engine.
* Recent engine problems: Consider any recent issues. Did the engine seize up, overheat significantly, or suffer a catastrophic failure? These incidents can lead to a locked engine.
* External signs of damage: Inspect the engine bay for any obvious signs of damage that might interfere with the engine's rotation. This could include broken parts, significant debris, or signs of a collision.
To differentiate a locked engine from other starting issues:
* Check the battery: Ensure the battery has enough charge. Use a multimeter to test its voltage.
* Check the starter: A faulty starter motor will prevent the engine from turning over. This requires more mechanical knowledge to diagnose.
* Check all connections: Look for loose, corroded, or damaged cables, especially the battery terminals and starter connections.
If you suspect a locked engine, do NOT repeatedly try to crank it. This can cause further damage. You'll need professional help. A mechanic will need to diagnose the specific cause of the lockup, which could include:
* Seized bearings: Lack of lubrication can cause bearings to seize, preventing engine rotation.
* Broken connecting rod: A connecting rod failure can physically block the engine's rotation.
* Worn piston rings: Extremely worn rings can cause the piston to stick.
* Bent crankshaft: Damage to the crankshaft will prevent it from turning.
* Interference from a foreign object: Something may have fallen into the engine compartment and is blocking movement.
In short, a locked engine is a serious problem requiring professional diagnosis and repair. Don't attempt to fix it yourself unless you have significant mechanical experience.
