1. Worn or Damaged Carburetor Float:
* The Problem: The float in the carburetor controls fuel level. If it's worn, damaged, or stuck, it can allow excess fuel to pass into the crankcase.
* Symptoms: You might also notice a rich fuel mixture, stalling, or difficulty starting.
* Solution: Inspect the float for wear or damage. If it's the problem, you'll need to replace it.
2. Faulty Fuel Petcock:
* The Problem: The fuel petcock controls fuel flow. If it's stuck open or leaking, it can allow fuel to flow into the crankcase.
* Symptoms: Fuel may drip from the petcock even when it's turned off.
* Solution: Replace the fuel petcock if it's faulty.
3. Cracked or Damaged Carburetor Bowl:
* The Problem: A crack or damage in the carburetor bowl can cause fuel to seep into the engine.
* Symptoms: You might see fuel leaking from the carburetor.
* Solution: Replace the carburetor bowl.
4. Worn or Damaged Rings:
* The Problem: Worn or damaged piston rings can allow fuel to bypass the combustion chamber and enter the crankcase.
* Symptoms: You might notice smoke coming from the exhaust, or a loss of power.
* Solution: Replace the piston rings, potentially requiring an engine rebuild.
5. Faulty Intake Valve:
* The Problem: A faulty intake valve can allow fuel to flow past it into the crankcase.
* Symptoms: Similar to worn rings, you might see smoke or a loss of power.
* Solution: You'll need to repair or replace the intake valve.
How to Proceed:
1. Start with the Simple: Begin by inspecting the carburetor float, fuel petcock, and carburetor bowl for any issues.
2. Mechanical Check: If those components are okay, it's time to look at the engine. Consider a compression test to see if the piston rings are the problem.
3. Professional Assistance: If you're unsure about any of these checks or repairs, it's best to take your LT250 to a qualified mechanic.
Important Note: Driving with fuel in the crankcase can cause serious damage to your engine. It's crucial to address the issue as soon as possible.
