Understanding the Smoke:
* White Smoke: This usually means water is getting into the combustion chamber, which could be caused by:
* Head Gasket Failure: A blown head gasket allows coolant to mix with the combustion process.
* Cracked Cylinder Head: A crack in the cylinder head can also let coolant leak into the combustion chamber.
* Faulty Coolant System: A leak in the radiator, hoses, or water pump can lead to coolant entering the engine.
* Blue Smoke: This usually indicates burning oil, which could be caused by:
* Worn Piston Rings: Worn piston rings allow oil to seep past into the combustion chamber.
* Valve Stem Seals: Damaged or worn valve stem seals can allow oil to leak into the combustion chamber.
* Engine Oil Overfill: Excessively filled engine oil can lead to oil being burned.
The Stages of Smoke:
The fact that the smoke comes in stages and then the machine seems OK is concerning. It could suggest an intermittent issue, potentially related to a leak that is triggered by the engine's position when tipped over.
What to Do:
1. Don't Ignore It: This is a potential sign of serious engine damage. Ignoring it could lead to further complications and costly repairs.
2. Inspect for Leaks: Carefully inspect the engine compartment, radiator, hoses, and connections for any signs of leaks.
3. Check Engine Oil: Check the engine oil level. If it's low, it might be a sign of oil being burned.
4. Check Coolant: Check the coolant level and look for any signs of contamination (oil in the coolant, or vice versa).
5. Seek Professional Help: Contact a qualified Bobcat mechanic or a reputable engine repair shop. They have the expertise and tools to diagnose the problem accurately and recommend the appropriate repairs.
Important Considerations:
* Safety First: Before inspecting or working on the engine, ensure the machine is completely shut off, cooled down, and the parking brake is engaged.
* Warranty: If your machine is under warranty, contact your dealer immediately as repairs may be covered.
Remember, diagnosing engine issues can be complex, and it's best to consult a qualified professional for an accurate diagnosis and repair.
